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CSS - Positioning Layers In X,y (position/float?) And Z (z-index?) Dimensions
Hi all,
After being away from the forums for some while I picked up the "webdesign-bug" again (it's raining during my summer holidays) but I'm having some troubles catching up with all new techniques/syntaxes at the moment. I did have a look at some tutorial sites and searched the forum for similar problems but somehow it's a bit overwhelming and I didn't find the solution I'm looking for yet. I do hope I didn't overlook something very basic or ask a frequently asked question (sorry then ) The goal I'm trying to make a (css-based) site with a central column with all 'normal' data. Below this central column I'd like to place some additional layers which are (partly) hidden underneath the main layer and which show themselves if you move with your mouse over the visible parts. The idea behind it is to create some 'desktop' where you have all kinds of things laying on eachother (like additional pieces of paper, some photographs, some money, ...). As an extra feature there would be another layer which makes sure there's a shadow from the 'main column' on the items below it. (Hope this is clear?) What I did so far To achieve this I thought I'd use different layers with different z-indexes and position them over and underneath eachother. So far I have the following code: html4strict Code: Original - html4strict Code <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Test Layers</title> <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" /> <link href="style.css" type="text/css" rel="stylesheet" /> <script type="text/javascript"> function show( obj ) { bla = document.getElementById( obj ); bla.style.zIndex += 10; } function hide( obj ) { bla = document.getElementById( obj ); bla.style.zIndex -= 10; } </script> </head> <body> <!-- CONTAINER --> <div id="container"> <h2 class="title">Quick Links</h2> <!-- SUBCONTENT --> <div class="subcontent1" id="subcontent1" onMouseOver="show('subcontent1');" onMouseOut="hide('subcontent1');"> Subtext1<br/><img src="/images/1pix.gif" width="400px" height="400px" alt=""/> </div> <div class="subcontent2" id="subcontent2" onMouseOver="show('subcontent2');" onMouseOut="hide('subcontent2');"> Subtext2<br/><img src="/images/1pix.gif" width="400px" height="400px" alt=""/> </div> <!-- CONTENT --> <div class="content_shadow"> <div class="content"> <h1 class="title">Site Title</h1> <div class="content_white"> <h2 class="title">Content Title</h2> Maintext1 </div> </div> </div> </div> </body> </html> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> css Code: Original - css Code * { margin: 0; padding: 0; } body { background-color: orange; } h1.title { display: none; } h2.title { display: none; } /******************************************************************** * CONTAINER ********************************************************************/ #container { border: solid 1px black; margin: 0 auto; width: 1000px; z-index: 1; /* background-color: lightgray;*/ /* filter: alpha(opacity=50);*/ } /******************************************************************** * SUB CONTENT ********************************************************************/ /* http://msdn2.microsoft.com/en-us/library/ms530301.aspx http://www.w3schools.com/htmldom/prop_style_clear.asp http://www.dynamicsitesolutions.com/css/layout-techniques/ */ #container .subcontent1 { background-color: lime; float: left; position: relative; top: 100px; width: 400px; z-index: 2; /* display: inline;*/ /* height: 200px;*/ /* left: 0px;*/ } #container .subcontent2 { background-color: lime; display: block; float: right; position: relative; top: 200px; width: 400px; z-index: 3; /* display: block;*/ /* height: 200px;*/ } /******************************************************************** * MAIN CONTENT ********************************************************************/ #container .content_shadow { background-color: gray; display: block; margin: 0 auto; opacity: .75; position: relative; top: 0px; width: 850px; z-index: 8; } #container .content { clear: none; margin: 0 auto; width: 800px; z-index: 9; } #container .content_white { background-color: white; display: block; height: 800px; margin: 0 auto; position: relative; top: 0px; width: 100%; z-index: 10; }
* {
The problem(s) Besides the (css)code probably being sloppy (and redundant at points?!?) since I experimented a lot with adding and removing of position-tags, floating-tags, etc etc.. it still fails to do what I'm aiming for. As can be seen on the attached screenshot most of it seems to be working (at least in FF2) (I had my mouse over the 2nd subcontent-layer btw) but the maintext1 won't start at the left of it's layer but instead starts on a x-coordinate where the 1st subcontent-layer finishes Can somebody point me to what I'm doing wrong? Also, if somebody has a relevant tutorial I'd appreciate it as well since I obviously need some extra exercise with this stuff (working on it already btw but you never know if there's another good one) Thanks for any help and if something isn't clear I'll try to explain it further! Similar Tutorialssubject isn't too good anyhow.. i have 4 cells __ __ |1 | |2 | --- --- __ __ |3| |4 | --- --- 2 and 4 are said to float right, such that 1 and 3 define the height of the page.. but.. when the contents of 2 go LONGER than the contents of 1, number 4 doesn't float right properly.. instead this happens __ __ |1 | |2 | --- | | --- | | |4| --- --- __ |3| --- do you see that? 4 tries to float right, but since it's called underneath 1, and 2 is extended, floating right relative to the page doesn't make it ACTUALLY float right any thoughts that will render this properly? (namely that cells 1 and 3 will inherit the height of 2 and 4 somehow?) I have a javascript function that maintains a central large video (which i want on top) and the 6 next most recently played videos appear as small videos also on the page, each in its own css div. the function calls a php program that outputs a div containing a video, the code shown below. The problem is that sometimes, the smaller videos are overlapping the large ones, which shouldn't be happening according to the div's z-index the javascript code can be found athttp://www.unc.edu/~arboone/demo.php from layer.php: (getX,getY = random coordinates) extract($HTTP_GET_VARS, EXTR_OVERWRITE, ""); $horiz=getX(); $vert=getY(); if( IsSet($clip) ){ if( strcmp($size,"large") == 0 ){ print "<div style=\"position: relative; z-index: 10000; left: $horiz; top: $vert\">"; print "<embed height=\"210\" width=\"266\" CONTROLLER=\"false\" SRC=\"/mov/"; print $clip; print "\" type=\"video/quicktime\" autoplay=true loop=true controller=false cache=false scale=\"tofit\" volume=\"100%\" BGCOLOR=\"#000000\" BORDER=\"0\"></embed>"; print "</div>"; } if( strcmp($size,"small") == 0 ){ print "<div style=\"position: relative; z-index: 0; left: $horiz; top: $vert\">"; print "<embed height=\"105\" width=\"133\" CONTROLLER=\"false\" SRC=\"/mov/"; print $clip; print "\" type=\"video/quicktime\" autoplay=true loop=true controller=false cache=false scale=\"tofit\" volume=\"0%\" BGCOLOR=\"#000000\" BORDER=\"0\"></embed>"; print "</div>"; } } Ok I have two layers positioned on the bottom left and right of my page as you can see here.. The problem is when I resize the page the two layers move up with it and then if I use the scroll wheel they dont go back to the bottom and they stay where they are. Anyone know how I can get it so if I were to resize the page the two elements would stay at the bottom. I tried that footer demo that everyone posts the link for but I couldnt get it to work for the case I have. Anyone have any ideas? Thanks , appreciate any help you can give me. Not sure where to put this because it involves php, dhtml, css and layers? But anyway I'll give it a shot here. I have a problem that I can't seem to tackle. Basically what I need is: I need to set a number of layers on an absolute position from a relative point, the topleft corner of an image of a map (that has no fixed position from the top of the page because the amount of content from the top before the image of the map can change because it is a dynamically generated page). I have: An image of a map and in a mysql table a number of sets of xy coordinates (in pixels) from the top-left corner on that image to some points on the map. (Unfortunately I can't show you the pages, but I'll try to be as clear as posssible) Trying to accomplish: A map somewhere on a page and query from a database a set of x-y-coordinates of different points, that correspond to top left corner of that map. On the exact x-y coordinates I want to display a small image of a crosshair, so that a number of points are indicated on the map with crosshairs. The points on the map (read: sets of x-y coordinates) can differ. Solution (I thought): Use layers using the <div> tag. So I use a layer to specify the location of the map. Then I query the table for all the x-y coordinates of the poins on the map and create a layer for every set of x-y coordinates. Here's the code ($cat and $de are taken from an URL): PHP Code: //get xy coordinates of primary position $locbase = mysql_query("SELECT lb_xcoord, lb_ycoord FROM locbases WHERE lb_cat_id = $cat AND lb_ad_id = $de "); $locbasered = mysql_fetch_array($locbase); $xred = $locbasered["lb_xcoord"]; $yred = $locbasered["lb_ycoord"]; //get xy coordinates of other positions on the same map $locotherbases = mysql_query("SELECT lb_xcoord, lb_ycoord FROM nuke_zc_locbases WHERE lb_cat_id = $cat AND lb_ad_id <> $de "); //position the map at coordinates 0-0 echo "<div id=\"Layer1\" style=\"position:relative; left:0; top:0; z-index:0;\"><IMG SRC=\"$img\" border=\"0\"></div>"; //position the primary position on the map in a layer on top of the map layer echo "<div id=\"Layer2\" style=\"position:relative; left:$xred; top:$yred; z-index:1;\"><IMG SRC=\"http://192.168.1.11/sites/test/crosshair.gif\" border=\"0\"></div>"; //create a loop and for each loop create a layer with based on the set of x-y coordinates and display a crosshair image in that layer $k = 3 ; while( $locothers = mysql_fetch_array( $locotherbases ) ) { $xgrey = $locothers["lb_xcoord"]; $ygrey = $locothers["lb_ycoord"]; echo "<div id=\"Layer$k\" style=\"position:relative; left:$xgrey; top:$ygrey; z-index:$k\"><IMG SRC=\"http://192.168.1.11/sites/test/crosshair.gif\" border=\"0\" ></div>"; $k++ ; } Problem 1: This all works (except for problem 2, described later) when the position statements in the tag are set to absolute. Then it will display correctly in the left hand corner and all crosshairs are positioned correctly. The thing is that I want it embedded in another page, so that it is displayed below some content that is also dynamically generated (so I can't set position to absolute, because I don't know where the content before the map stops) So I have to set it to relative and then all the divs are displayed relative to the previous tag. Since the tags are dynamically generated through a while loop, the crosshairs will all move down a blank line. Problem 2: The layers do not stack exactly as planned, first because the images of the crosshairs are displayed under the map (but the z-index builds up correctly doesn't it?) he weird thing is that when I put the <div> tag of the map image after the looped and primary crosshair div-tags, then the crosshairs are all displayed on top of the map. To my knowledge the z-index should work regardless of where the code is , no?) Anyone any idea how to do this? (or would I have to display the map and crosshairs in an <iframe>within the dynamically generated page) Thanks for any feedback! Cheers, Gurt Is it possible to make a layer relative to the 'body' or some other container in my web page? The position of my layer changes with each screen, browser or setting but I would like to be able to keep it, say, 150px in from the left edge of the 800px wide 'container' I've made. In other words, I want a layer to act like any other selection. Thanks Chris Ok here's my problem - I have three columns/layers (left, center, right) which are inside the content layer. I need to use relative positioning so when the page is re-sized all the page elements are still centered on the page. The problem I am having is that I cannot figure out a way for the colums to be aligned and seem to go under one another. I also need to keep the center colum with an overflow. If anyone has any ideas I would be very grateful! Thanks <div id="content"> <div id="leftcolumn"></div> <div id="centercolumn"></div> <div id="rightcolumn"></div> <!-- End content --> </div> #leftcolumn { background-image: url(images/leftcolumn.gif); height: 412px; width: 148px; position: relative; margin-top: 0px; margin-left: 4px; } #centercolumn { background-color:#FFFFFF; height: 412px; width: 382px; position: relative; margin-top: 0px; margin-left: 3px; overflow: auto; text-indent: 2px; } #rightcolumn { background-image:url(images/rightcolumn.gif); height: 412px; width: 148px; position: relative; margin-top: 0px; margin-left: 7px; } I seem to have an issue with my positioning (or float) in IE (7 & 8). Every other browser I tried renders the page properly (Safari, FF, Chrome). IE9 wasn't tested yet, so I don't know if it's screwed up too. Here's the link: www[dot]nintendrunk[dot]com/forum The content is all over the "header" in IE whereas it is neatly contained in the middle in other browsers. It only happens with the forum page, every other page's content is fine. Any help would be greatly appreciated. (I assume the problem is with a position/float tag somewhere, but I might be wrong) First off, every time I come back to try to institute CSS more in my site, the more I hate it. That said, my problem: I have a DIV box that stretches 100% across my screen. Inside of it I need two more DIVs, 'A' aligned to the left and 'B' aligned to the right. I need to be able to add another DIV (C) to the right of A under certain circumstances. The first problem comes into play that you can't just lay a DIV down without a stupid linebreak. I need to use DIVs and not SPANs because both B and C have multiple lines. I also can't do absolute locations because the page is PHP-generated and the items don't have a consistant location on the page, except as being under the same parent DIV. Now I've read around and it seems I want to use floats, and IE supports this to some degree. FF, however, seems to completely remove the children from the parent when a float is used-- despite literature stating that it should remain in the parent. This messes up my entire display as it then begins covering up other content. Question #1: Is there ANY way to avoid display corruption from the line break forced on by block elements, other than putting everything into a table? It would help many facets of my site greatly if I could create self-contained DIV objects which can be placed right after each other like images. And it would solve this problem as well. Question #2: Why would floating children be escaping the parent when w3c and w3schools, among others, all say it shouldn't? If my situation is confusing I can make up a diagram upon request. Thanks- Dave The code below displays the boxes i want but i do not understand why those that could be aligned to left are not aligned. I would like to have those boxes to be aligned to the left. Any help is appreciated. Code:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" >
<title></title>
<style type="text/css">
div {
position: relative;
width: 10em;
padding: 0.25em;
margin: 0.25em;
border: 1px solid black;
text-align: center;
overflow: auto;
float: left;
}
</style>
</head>
<body>
<div style="top: 0em; height: 2em;"> 8 pm</div>
<div style="top: 5em; height: 2em;"> 9 pm</div>
<div style="top: 10em; height: 2em;">10 pm</div>
<div style="top: 8em; height: 5em;">Box A</div>
<div style="top: 9em; height: 5em;">Box B</div>
</body>
</html>
Hello, I'm new to css layouts. I had to float:left every element so the heights stretch problem is if the image in "page_c_left" is wider than 45% then "page_c_right" will automatically go on the next line. (in Firefox, IE seems to wrap the text without moving the element). also, i wanted to have the content displayed first for non-css browsers, but the examples used position:absolute. when the impression i got was that float is preferable to position. i'm very confused on which method to use for layouts. what method would you use for complex css layouts? float, position or other? this is code with the text wrap problem Code:
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>test</title>
<style type="text/css">
#main_c {
float:left;
width:770px;
padding: 10px;
border: 1px solid black
}
#header_c {
float:left;
border:1px solid brown
}
#page_c {
float:left;
width:100%;
border:1px solid red
}
#page_c_left {
float:left;
padding:10px;
border:1px solid blue
}
#page_c_right {
float:left;
width:55%;
padding:10px;
border:1px solid green
}
#footer_c {
float:left;
border:1px solid yellow
}
</style>
</head>
<body>
<div id="main_c">
<div id="header_c">
THIS IS THE HEADER
</div>
<div id="page_c">
<div id="page_c_left"><img src="../../photos/image.jpg" alt="image" /></div>
<div id="page_c_right">RIGHT SIDE paragraph RIGHT SIDE paragraph as ohajst aisdncn uajajs
ajshd hfhgg<br />lakshh toyt a bTr asnf f Uahdlalsl jahjsu aujsjdhduwhtn ausud aushd aiua akshdusjj<br />
ka u annf au ffsdjkfjs didjs dd sjskjdk<br /> SIDE paragraph RIGHT SIDE paragraph as ohajst aisdncn uajajs
ajshd hfhgg<br />lakshh toyt a bTr asnf f Uahdlalsl jahjsu aujsjdhduwhtn ausud aushd aiua akshdusjj<br />
ka u annf au ffsdjkfjs didjs dd sjskjdk<br />RIGHT SIDE paragraph RIGHT SIDE paragraph as ohajst aisdncn uajajs
ajshd hfhgg<br />lakshh toyt a bTr asnf f Uahdlalsl jahjsu aujsjdhduwhtn ausud aushd aiua akshdusjj<br />
ka u annf au ffsdjkfjs didjs dd sjskjdk<br /> SIDE paragraph RIGHT SIDE paragraph as ohajst aisdncn uajajs
ajshd hfhgg<br />lakshh toyt a bTr asnf f Uahdlalsl jahjsu aujsjdhduwhtn ausud aushd aiua akshdusjj<br />
ka u annf au ffsdjkfjs didjs dd sjskjdk<br /></div>
</div>
<div id="footer_c">
THIS IS THE FOOTER
</div>
</div>
</body>
</html>
if you could help, thank you Please look at this page - http://casadelsol.tmhdesign.com/about.asp I have a div with an id of "header". In that div I placed this code Code: <div style="width:200px;height:200px;background-color:yellow;margin:0 0 -50px 400px;z-index:10000"> </div> As you can see it goes under the absolutely positioned div element with an id of top_header. I want to put a drop-down menu in the top header area but it slides under the top_header element. Can you help? Thanks Hello all, I am having a problem I can't seem to figure out. The site is: http://www.ciccotticenter.org/test_site/ When you view the site in IE6, the logo in the top left corner disappears. I have tried everything I can think of. Interestingly when I add * { border: 1px solid red; } it works. But I can't figure out what thats doing to make it work. Any ideas? Thanks, Ryan Hi, I have been beating my head against the wall here. My video position in firefox shows up over top of my other nested divs/classes. www.binaryshopper.com The site renders perfect in IE. When you spend more time on CSS than programming, something is wrong! I love CSS but it still doesn't do what it was intended to do. After years of CSS, you still have better control over layout using crappy tables!! Can someone please help me here before I start shooting Firefox developers? http://trinitylifebaptistchurch.org/test/content_page1.html My left float container is correct, but the right float container is not in the correct spot. Instead of being to the right like I want it is on the next line and to the right. Why is it going down a line? Thanks. There are two issues with my code that I need some help with. I'm trying to set the width to for the main content wrapper, IN IE it renders correctly, but in FF, it clears the sidenav float and starts on new line. By setting the width to a fixed px, I fix the problem in both browsers but I loose my liquidity. Second, with the main content div I have a 2 collumn layout, floated on top of each other. This renders properly in IE, but not in FF. The basic layout of the code is html Code: Original - html Code <div>Banner</div> <!-- This div is a fixed width div, floated to the left and has several inner divs that contain graphical elements--> <div>Side Navigation</div> <!-- This div is the main content area floated next to Side Navigation Div, There are several inner divs that contain graphical elements. When I set this width to atuo (for liquid) it works with IE, but doesn't with FF --> <div>Wrapper <!-- This div contains 2 collumns floated The float is being rendered in IE, but not in FF I have put a green border around the 2 collumns for clarity <div>Inner Content <div>Collumn 1</div><div>Collumn 2</div> </div> </div> /* The offending CSS Wrapper ID */ div#page { float:left; margin-top:5px; margin-left:10px; width:750px;/* renders in Both, but not liquid */ /* width: auto; renders in IE and I have liquid */ } /*These are the 2 collums which render in IE, but not FF */ div#col-a { position:relative; float:left; padding-left:10px; width:50%; } div#col-b { position:relative; padding-left:10px; padding-right:10px; float:left; }
<div>Banner</div>
<!-- This div is a fixed width div, floated to the left
and has several inner divs that contain graphical elements-->
<div>Side Navigation</div>
<!-- This div is the main content area floated next to Side
Navigation Div, There are several inner divs that contain
graphical elements. When I set this width to atuo (for liquid)
it works with IE, but doesn't with FF -->
<div>Wrapper
<!-- This div contains 2 collumns floated
The float is being rendered in IE, but not in FF
I have put a green border around the 2 collumns for clarity
<div>Inner Content
<div>Collumn 1</div><div>Collumn 2</div>
</div>
</div>
/* The offending CSS Wrapper ID */
div#page {
float:left;
margin-top:5px;
margin-left:10px;
width:750px;/* renders in Both, but not liquid */
/*
width: auto;
renders in IE and I have liquid */
}
/*These are the 2 collums which render in IE, but not FF */
div#col-a {
position:relative;
float:left;
padding-left:10px;
width:50%;
}
div#col-b {
position:relative;
padding-left:10px;
padding-right:10px;
float:left;
}
You can view my work here, I haven't put the CSS in its own page yet so you can see the source Liquid, but doen't work in FF Renders in Both, but no liquid I was asked to change the header to a rotating one, and I found a nice jquery solution. Of course at first it made the links at the top (on top of the image) disappear, but then I looked at the jquery code and saw that it used z-index (1000), and so I made <header p> = z-index of 6000. That brought them back and in fact it looked pretty good... except in IE. And, depending on what I'm doing to fix the IE problem, Safari. In those browsers, the rotating header appears flush under the header p links, rather than flush up against the border -- and you can see the old static image peeking out. http://esdcar.org/about/board.html?category_id=1&sub_id=2 I googled z-index and IE and found several different options for stacking problems, which it seems like this is. (Am I wrong?) Negative z-index on the header div that contains header p, solved the problem in Safari but not IE. I followed some other suggestion and made all the parent elements successively 1 higher in value. Basically I've tried many things and none have worked. This is the current iteration: Code: #container
{ color: #775b36;
background-color: #ffefca;
border: 4px #f5c674 solid;
width: 800px;
margin: auto;
background: url(../images/bkg_faux.jpg) repeat-y 50% 0;
z-index: 6003; }
<snip (unrelated divs)>
#content
{ width: 75%;
position: relative;
margin: 0em;
float: right;
z-index:6002;}
#header
{ background-image: url(../images/ec_landscape.jpg);
background-repeat: no-repeat;
background-position: top; height: 100px;
border-bottom: 4px #f5c674 solid;
text-decoration: none; color: #775b36;
text-align: left;
margin-bottom: 0em;
position:relative;
z-index:6001; }
#header p
{ float: right;
/*margin-right: 1%;*/
margin-top: 0em;
padding-top: .2em;
font-size: .7em;
position:relative;
z-index:6000;
display:inline;
background:#ffefca;
padding: 2px; }
What am I not getting? It seems like the z-index is the problem that was introduced, but I can't seem to fix it. First this seems like a common problem but I couldn't find an answer. I did look, maybe I didn't use the right search terms but I did look. So I have always wanted to do this but could never figure out a way to do it. I'd like to have relative positioned divs overlap each other and not push the rest of the layout around. Pretty much the exact same way absolute works, but just position relatively. |
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