|
CSS - The Difference Between Id Selectors And Class Selectors, Please?
Hi all,
could someone please explain to me the difference between ID selectors - #idselector {ksjdfkjd} and class selectors - .classselector {askdjfak} ? I am just becoming more familiar with CSS and I'm not sure when I should use which. Thanks Similar TutorialsI'm trying to get my head round these ... A) .search input, .search .commonButton { margin-right: 7px; vertical-align: middle; } I know what the style parts do, but I don't understand what the first two lines are doing. I think the second line is saying to apply the style to all .commonButton classes within a .search class ??? Don't know about the first. -------------------------------------- B) .buttons div { white-space: nowrap; } does this mean the style is applied to any div elements within the .buttons class? It would be a great idea to have some html type viewer, or FF plugin that would show you the slectors of an html document. Does anyone know of something like this ? I'm trying to learn css and if I could just highlite some text in the html document and it would display the possible selectors for that selection I think it would be a great learning aid. Any ideas ? I want to style something based on what comes after it. If a div is the last to have the class "combinedyes" I want to make the text red for example. I've experimented with: #EditMedHistoryDisplay div.cmMed.combinedyes + div.cmMed.combinedno But that styles the combinedno element... Any ideas? Code: <div id="EditMedHistoryDisplay"> <div class="cmMed odd combinedyes">Testosterone 2 mg <span class="medicationDelMethod">Cream-Transdermal</span> <div class="cmNotes ecmInstructions" id="cmnotes_21158" title="Click to edit" style="background-color: rgba(0, 0, 0, 0); ">1 Gm (1 Gm = 1/4 tsp = 2 pumps)</div> </div> <div class="cmMed even combinedyes">DHEA 10 mg <span class="medicationDelMethod"> Cream-Transdermal</span> <div class="cmNotes ecmInstructions" id="cmnotes_21194" title="Click to edit" style="background-color: rgba(0, 0, 0, 0); ">1 Gm (1 Gm = 1/4 tsp = 2 pumps)</div> </div> <div class="cmMed even combinedyes">Test 10 mg <span class="medicationDelMethod"> Cream-Transdermal</span> <div class="cmNotes ecmInstructions" id="cmnotes_21184" title="Click to edit" style="background-color: rgba(0, 0, 0, 0); ">1 Gm (1 Gm = 1/4 tsp = 2 pumps)</div> </div> <div class="cmMed even combinedno">Testosterone 2 mg <span class="medicationDelMethod"> Patch-Transdermal</span> <div class="cmNotes ecmInstructions" id="cmnotes_21038" title="Click to edit">It's a patch...</div> </div> </div> I am displaying a Google feed on my site through an asp script that converts RSS to HTML. There is no room for images where the feed is, so we just take them out by setting display: none;. That solves one issue, but then the text is way off. I'm having trouble acessing the text after the picture so I can use absolute positioning and keep it left justified. See http://www.lsuhospitals.org/Hospitals/Bogalusa_Med_Center.htm for an example. Here's the RSS to HTML source tabbed out as best I could. This conversion isn't perfect and still needs some work. What's in red is what I need CSS access to, but only when an image is present. Whew! Code: <html><head><title></title><LINK REL="StyleSheet" HREF="../../StyleSheets/HCSD.css" TYPE="text/css" MEDIA="screen"><style>body{margin: 0px; padding:0px; background-color:white;}</style></head><body>
<table width="140px" class="BodyTextHeading1" cellspacing="0" cellpadding="0">
<tr>
<td>
BMC IN THE NEWS
</td>
</tr>
</table>
<table>
<tr>
<td class="rsscontainer">
<br>
<table border=0 width= valign=top cellpadding=2 cellspacing=7>
<tr>
<td valign=top>
<a href="http://news.google.com/news/url?sa=T&ct=us/0-0&fd=R&url=http://www.edailynews.info/articles/2007/01/04/news/news04.txt&cid=0&ei=RKemRfDvO8qMsgGgwJmXDQ">
Two perish in accidents as 2006 comes to close
</a>
<br>
<font size=-1>
<font color=#6f6f6f>
Bogalusa Daily News, LA -
</font>
<nobr>
Jan 4, 2007
</nobr>
</font>
<br>
<font size=-1>
Bonnett said the incident is still being investigated and oxicology tests are still being conducted. The initial 911 call was made to WPSO and came from the LSU-<b>Bogalusa Medical Center</b> where Johnson had been brought by private vehicle.
</font>
<br>
</table>
</td>
</tr>
<tr>
<td class="rsscontainer"><br>
<table border=0 width= valign=top cellpadding=2 cellspacing=7>
<tr>
<td width=80 align=center valign=top>
<a href="http://news.google.com/news/url?sa=T&ct=us/1i-0&fd=R&url=http://www.edailynews.info/articles/2007/01/02/news/news04.txt&cid=0&ei=RKemRfDvO8qMsgGgwJmXDQ">
<img src=http://news.google.com/news?imgefp=lpU8D0_YzTEJ&imgurl=www.edailynews.info/content/articles/2007/01/02/news/news04.jpg width=79 height=37 alt="" border=1>
</a>
</td>
<td valign=top>
<a href="http://news.google.com/news/url?sa=T&ct=us/1-0&fd=R&url=http://www.edailynews.info/articles/2007/01/02/news/news04.txt&cid=0&ei=RKemRfDvO8qMsgGgwJmXDQ">Tim Augustine, Regina Runfalo to reign over MCCA XXVII festivities</a>
<br>
<font size=-1>
<font color=#6f6f6f>
Bogalusa Daily News, LA -
</font> <nobr>Jan 2, 2007
</nobr>
</font>
<br>
<font size=-1>Runfalo, a registered nurse, serves as assistant administrator of LSU <b>Bogalusa Medical Center</b>, where she has been employed 26 years.
</font>
<br>
</table>
</td>
</tr>
</table>
And here are the relavent styles that I created. I have consulted my book "The Web Professional's Handbook" by glasshaus publishing. They have a decent CSS section (selectors on pgs. 96-97), but to no avail. Code:
.rsscontainer {
font-family: Verdana;
color: black;
width: 140px;
background-color: white;
padding: 0 0 0 0;
margin: 0 0 0 0;
}
.rsscontainer table tr td font{
font-size: 10px;
line-height: 1.3;
}
.rsscontainer table tr td a img {
display:none;
}
.rsscontainer table tr td a {
font-family: Verdana;
font-size: 10px;
color: #461D7C;
text-decoration: underline;
}
.rsscontainer table tr td a:hover {
font-family: Verdana;
font-size: 10px;
color: #7549B1;
}
.rsscontainer table tr td a:visitied {
font-family: Verdana;
font-size: 10px;
color: #7549B1;
text-decoration: underline;
}
I am trying to style the <hr> in the following peice of my page using css selectors. I have used,
Code: td div hr {...}
, but this affects other hr's outside of this menu. Is there a way to make this work without having to give the hr a class name? Thanks. Code:
<td width="140" bgcolor="#EFBE56" class="Menu_WhiteText_GoldBkgd"><div align="left">
<p class="side_menu_white"><br>
<a href="In-The-News.htm" style="color: white">in the news...</a> </p>
<p class="side_menu_white"> <a href="Press_Releases.htm" style="color: white">press releases</a> </p>
<p class="side_menu_white"><a href="Newsletter.htm" style="color: white">newsletter</a> </p>
<p class="side_menu_white"><a href="Multimedia.htm" style="color: white">multimedia </a></p>
<p class="side_menu_white"><a href="../About/annual_reports.htm" style="color: white">annual reports</a> </p>
<p class="side_menu_white"><a href="Contact.htm" style="color: white">contact media relations & communications</a> </p>
<hr>
<p><span class="Menu_WhiteText_GoldBkgd"> <a href="PhotoRelease-ConsentForm.pdf" target="_blank">consent form</a> </span> <span class="Body_Text2"><span class="Body_Text"><br>
<br>
</span></span></p>
</div></td>
Hi, I'm building a page that imports two blog feeds from feedburner displaying them in separate divs. I'm a beginner at CSS and could use some help manipulating the styles of these blog feeds separately (which are linked to an external style sheet), but I don't know enough about context dependent css and selectors. I've tried researching a solution but haven't found an answer specific to what I'm doing. I've given the divs their own IDs ("newsblog" and "newcontent"). Here's an example of some of Google's css: div.feedBurnerFeedBlock li a:link { font-size: 20px; font-weight: bold; font-color: #9F0; font-family: Verdana, Geneva, sans-serif; text-decoration: none; list-style-type:none; } I need to take that code and make it specific to one div or the other, instead of applying to both. Any help or advice is greatly appreciated. Thanks, Jeff i have two p tags one after the other.. <p>text</p> <p>text</p> and I did: Code:
#head p {
float:left;
margin-top:2%;
font-style:oblique;
font-size:150%;
color:green;
}
#head p+p {
float:right;
font-size:75%;
color:red;
}
the problem is that if i do margin-top:4% to the first p; this also changes that in the adjacent p? is this correct? Hi all, I'm having an issue using CSS3 selectors. I'm not quite sure if this is even possible but here it goes. Imagine the HTML below: html4strict Code: Original - html4strict Code <tr> <th><input type="checkbox" name="cb" /></th> <td>Something here</td> <td>Someting here also</td> </tr>
Is it possible with CSS to utilize the :checked selector on "tr th input:checked" and somehow set the background color for the td-s? I've tried several combinations but to no avail. And as far as I know there's no parent selector or anything that lets you traverse backwards and I'm trying to avoid JavaScript as much as possible. I'm using Firefox 2.0.0.12. I am using CSS in the context of an SVG document. In SVG, we use element names like 'rect', 'circle', & 'polyline' rather than 'p', 'table' and 'form' as HTML coders are familiar with. I am trying to apply a generic style to all 'rect' elements, and then modify that style with class styles. The styles: Code:
rect{
fill: black;
stroke: yellow;
pointer-events: none;
.... other SVG styles ....
}
.frame{
fill: black;
stroke: magenta;
--- other SVG styles....
}
In the document, I use a 'rect' element, and apply the class style to it: Code: <rect class="frame" height="5088" id="Rect_37" width="6688" x="-1008" y="-1728" /> As you may notice, there appears to be a contradiction in the styles specified by the two selectors: 'rect' and 'frame'. One would have the element rendered with a magenta outline, while the other would outline with yellow. In practice, the stroke rendering seems to inherit from the 'rect' element style, although this seems counter-intuitive to me (class styles seem to be more specific than element styles). In researching this, I have actually found nothing that clarifies the question. Even the W3C site seems to ignore the case, as far as I can tell. Is this even valid CSS? If yes, what rule dictates how the document will get rendered? I have passed the entire SVG doc through the XML validator, but the CSS validator only accepts HTML & raw CSS. What would be the correct method of applying a global per-element-type style, but modifying it for specific instances of such elements? I am trying to keep the document as small as possible, and reduce the need for redundant style information, as this seems to have a significant impact on performance of the rendering (presently only tested using Mozilla Seamonkey) I'm pretty much of a CSS newbie, so feel free to correct whatever jargonology I've mangled. Pointers to definitive references most welcome. Thanks. --- rod. Here's a handy tip for you ... if like me you split your big stylesheet up into smaller ones, put them into a linked stylesheet and import them, like so: PHP Code: <link rel="stylesheet" type="text/css" href="main.css"> and in the CSS file itself ... PHP Code: @import url(css/file1.css); @import url(css/file2.css); @import url(css/file3.css); @import url(css/file4.css); some of you no doubt will already do this. here's the crux tho. if you also have some miscellaneous CSS which doesn't fit in any of the extra files and are going to include them in the linking [main] file, then you must include them after the import statements. if you don't Mozilla will ignore the imports and the extra files will not be included in the rendering. code should be like this: PHP Code: @import url(css/file1.css); @import url(css/file2.css); @import url(css/file3.css); @import url(css/file4.css); body { direction: rtl !important; } IE get's this correct regardless of the order. Hi everyone, So I've been coding for years and had drawn away for the design/css part, so I need some refreshing. I've tried the greater than / less than "operators" between selectors in my css declaration but to no avail. Basically what I want to do is example: Code: <form><!-- really doing this basic just to show the point -->
<fieldset>
<!-- inputs here -->
</fieldset>
<fieldset>
<fieldset><!-- ### nested fieldset inside fieldset, don't want to affect these child selectors -->
<!-- input bla -->
</fieldset>
</fieldset>
</form>
So as you can see in my brief exampl above, there's two parent selectors and one child inside the second one. I only want to change the properties of the parent ones, so that a fieldset INSIDE a fieldset doesn't get affected, and I was hoping anyone here might be able to shed some light on how to achieve this. Many thanks I have the following CSS styles: Code:
#content p { font-size: 24px; }
.smalltext p { font-size: 12px; }
Then, I create a #content div in my HTML with three paragraphs in it. I want the middle paragraph to have the .smalltext class, like this: http://www.toprival.com/temp/css_question.gif With the CSS the way I have it, the font size (12px) of the .smalltext paragraph is ignored. But if I change the CSS so both selectors are IDs, or so both are classes (and update the HTML accordintly), it works. Why is that? Unfortunately I am going to have to get more involved in CSS rather than happily concentrating on PHP development. We have realised that getting our designers to CSS stuff is just costing us time as they lack the experience and don't understand the semantics. Anyway, as such I need to find out a few things I know but don't know if you know what I mean. Where can I find out the official definitions of CSS operators... * html for example..what the * does. class1>class2...what the > does...stuff like that. I'm a bit confused about the class and id selector. It seems they both produce the same result. I've a book and it said that the id selector can be used once. Is that mean used once on the web page or on the css? <div class="content"></div> <div id="content"></div> Thanks. hey, I got a table, every <td> in the table got the css class .regular. (<td class='regular'>). When the user moves their mouse over a row, that row should change color. This works with the following code: <tr onmouseover='this.className=\"hoverRow\"'> However, this only works if the td's in that row have no class set yet. And since all td's in my table have a class set allready, i cant use this. How can i overwrite the class of the td's by the class for the whole row? thanks in advance Using the following example: Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Test</title>
<style type="text/css">
a
{
display: block;
}
a.one.on, a:hover.one, a:hover.one.on
{
color: red;
}
a.two.on, a:hover.two, a:hover.two.on
{
color: orange;
}
a.three.on, a:hover.three, a:hover.three.on
{
color: green;
}
</style>
</head>
<body>
<a href="#" class="one">one</a>
<a href="#" class="two">two</a>
<a href="#" class="three">three</a>
<p> </p>
<a href="#" class="one on">one</a>
<a href="#" class="two on">two</a>
<a href="#" class="three on">three</a>
</body>
</html>
Notice how, in IE6 (works fine in FF), when the secondary style named 'on' is added, all 3 links in the 2nd set display the properties of the style: Code: a.three.on, a:hover.three, a:hover.three.on
{
color: green;
}
(since it is last in the list) rather than the style specified by their respective numbers (i.e. 'one', 'two' or 'three'). Is there a way to overcome this in IE. I've read several forums and know that the technique I'm trying to achieve is possible, however I can't seem to get it to work. Basically I'm trying to shift the background positions of both the list item I'm hovering over and the next list item. I'm sure its just a syntax error and not a logic error, anyways the code is below - any help would be greatly appreciated! Code:
HTML Code
<div class="menu">
<ul>
<li><a href="#" class="search"></a></li>
<li><a href="#" class="battery"></a></li>
<li><a href="#" class="cart"></a></li>
<li><a href="#" class="contact"></a></li>
</ul>
</div>
CSS
.search, .contact, .cart, .battery
{
width:100px;
height:30px;
margin-left:-1px;
display:block;
}
.search
{
background-image:url(Images/search.png);
}
.contact
{
background-image:url(Images/contact.png);
}
.cart
{
background-image:url(Images/cart.png);
}
.battery
{
background-image:url(Images/battery.png);
}
ul li a.search:hover
{
background-position:0px 60px;
}
ul li a.search:hover ul li a[class=battery]
{
background-position:0px 60px;
}
Hi! What is the difference between these two snippets of code? <ul> <li>...</li> <li>...</li> <li>...</li> </ul> and <ol> <li>...</li> <li>...</li> <li>...</li> </ol> I know ul stands for unordered list and ol for ordered list but the two examples above are the same, right? What is the difference between these two: .itemBox #itemBox I'm trying to figure out what the difference is between these variables. I have created a menu using css... but when i view it in ie it looks just about right.. but on firefox.. the width is just off... example IE: width is fine ------------------ --------- | | | | | | |______| but in firefox it just go all the way across the screen.. arg Code:
.navcontainer ul
{
margin-top: 0;
margin-left: 2;
padding-left: 0;
list-style-type: none;
font-family: Arial, Helvetica, sans-serif;
font-size: 12px
}
.navcontainer {
margin: auto;
}
.navlist a {
width: 100%;
}
.navcontainer>.navlist a {
width: auto;
}
.navcontainer a
{
display: block;
padding: 1;
width: 165;
background-color: #003366;
border-bottom: 1px solid #eee;
}
.navcontainer a:link, .navlist a:visited
{
color: #EEE;
text-decoration: none;
}
.navcontainer a:hover
{
background-color: #369;
color: #fff;
}
i have attached the html file here.. cause i cant upload it. |
|||||||