CSS - Tag.class Or Class P

The book i am reading does not clear this up. When would you use class vs id to put elements in different catagories? why not use all id? It seems to make more sense.. ie. make all headers id="header"
and divs also class.

thank you in advance

So I want to create a really simple css file that uses a lot of the same styles. For example I may create a box that takes up two fifths of the page, and is floated left or right, similarly I may have a box that takes up three fifths, or four fifths etc.

The main thing here is that I'm thinking the specifics will be placed inside an ID like so:

Code:

#twoFifths {width:275px; padding: 0px 12px 0px 50px;}
#threeFifths {width:375px; padding: 0px 50px 0px 12px;}

And then to handle the float I'd use a class like so:
Code:

.floatRight{float:right;}
.floatLeft{float:left;}

Is this considered good practice? Obviously as I generate layouts I may want to float either right or left so having an ID for every single thing I may want to use would be a little overwhelming. The problem with this of course is that I can't call an ID twice in a page, and I can't have more than one class... so for example:

Code:

	<div id="templateBlueBox" class="floatRight">
		<h2>Six free lessons</h2>
		<p>These free Lessons are great to read online or print out and carry with you.</p>
					</div>
					
	<div id="templateGreenBox" class="floatRight">
		<h2>New Features</h2>
	        <p>Some fun, helpful study tools to help you get more out of every Lesson. Check them out!</p>
					</div>
				
	<div id="templateOrangeBox" class="floatRight">
		<h2>Sign up for email updates</h2>
		<p>So we can let you know when you can subscribe to get it every week.</p>
	</div>
					
	<div id="templatePinkBox" class="floatleft">
			<h2>Send us feedback</h2>
			<p>Is it the coolest thing ever (or is it just okay)? Tell us what you think!</p>
			</div>
					
	<div id="templateBlueBox" class="floatLeft">
		<h2>Submit photos</h2>
		<p>
		You can be part it..</p>
	</div>

So as you can see I'm having to repeat the id templateBlueBox. Is there a better approach for accomplishing this?

I'm using ASP.NET 2.0 for my site. I already have a CSS that is working for the site; however, because an ASP.NET lable requires CSS Class, how do I convert my current CSS to a CSS Class? I know that a CSS class start with a period then a unique name. The problem is how do I implement the li, ul, a, and so on. Here is what I have that I want to convert to a CSS Class.

#nav {
padding: 0;
clear: both;
}
body.main #nav, body.blogger #nav {
float:right;
width: 220px;
\width: 250px;
w\idth: 220px;
margin: 10px 10px 0 0;
padding: 0;
}
body.second #nav {
float:left;
width: 200px;
\width: 210px;
w\idth: 200px;
padding:0 0 20px;
margin: 0;
}
body.second #nav img {
padding-bottom: 10px;
}
#nav a { color: #006; }
body.second #nav ul {
list-style: none;
padding: 0 0 0 5px;
margin: 0;
}
body.second #nav ul li {
margin: 0 0 7px 0;
font-size: 11px;
}
body.second #nav ul li ul li { margin: 0 0 5px 15px; }
.skip { display:none; }
/* end #nav */

#content p, #nav p {
padding: 0;
margin-top: 0;
margin-bottom: 10px;
line-height: 140%;
}
#content li, #content ol {
margin-top: 0;
line-height: 140%;
}
code, pre { font-family:"Courier New", Courier, mono, monospace; }

/* definition lists, all that and a bag of chips! */
#content dl {
margin:0px;
padding:0;
}
#content dt { font-weight: bold; }
#content dd {
margin-top: 0;
margin-right: 0;
margin-bottom: 10px;
margin-left: 0;
padding: 0 5px 0 0;
}
/* end definition list*/

Any help is appreciated.

Problem solved.

I am new to CSS and confused about when to use id # and when to use class .

Some enlightenment on the benefits/purpose of each would be helpful. I have read several tutorials - but the same pretty much the same to me so I must be missing something

Thanks!

When defining css in a webpage, it can be done using either a class or id. My understanding is that css uses . notation with classes and # notation with id's, regardless of whether the actual css is in the webpage itself of linked externally. Please correct me in error. My css uses classes and external . notation. When I use id's only and # notation exernally, I lose all my styling. Its only when I use the # notation internally that the styling works. In order to use external css I need to declare both a class and id and dot notation. Internally only an id. Is this correct behaviour?

Hi there,

In my stylesheet I've written a style for the table tag:

Code:

table {
	width: 500px;
	margin: auto;
	text-align: left;
	border: 1px solid #999999;
	font-family: "Trebuchet MS", "Bitstream Vera Sans", verdana, lucida, arial, helvetica, sans-serif;
	line-height: 140%;
	margin-bottom: 10px;
	padding-bottom: 15px;
	font-size: 14px;
	padding-left: 10px;
}

All the main tables on my site need to be this exact style. I now need to create a table which shouldn't use the table style above. I could have just pasted the stylesheet info directly to the page (and delete the css link at the top of the page), and then delete the table info, but can't do this because the stylesheet link location is dynamic (my new site design will alternate a stylesheet every 24 hours).

Anyone know how I can tell the css to not apply the style to an element?

Thanks,


saj

hi everybody, i have the following problem

my code

Code:

.....
<table>
<colgroup>
<col class="makemebig" />
<col class="text" />
</colgroup>
<tr>
<td>Date:</td>
<td>12.2.12</td>
</tr>

</table>
...

in ie the cols have the right format, but in firefox they have the standard format. what's wrong? i googled but found nothing senseful.

can anybody help me?

I have a form with a list of things. The number of things in the list is variable, depending on certain factor, different things, different numbers of things. Next to each thing is a radio button.

There is a question with two radio buttons, "yes" and "no".

When "no" is selected, I want the radio buttons to be disabled, and the color of the text to change to gray.

For the radio buttons, I have a simple JS function: javascript Code:
Original - javascript Code function enableCFFID() { document.cartform.cffid.disabled=false; } function disableCFFID() { document.cartform.cffid.disabled=true; }

  

  


 function enableCFFID()


 {


     document.cartform.cffid.disabled=false;


 }


 function disableCFFID()


 {


     document.cartform.cffid.disabled=true;


 } 

For the test that goes with each thing, obviously I don't want to have to assign unique ID (perhaps in a span tag that encloses the text). I would want a common name for all of them.

But this would mean I can't use getElementById.

What other method can I use to change the class for a group of span tags who's number is variable?

i am working for a client that is strict on making sure that all code is up to standards.

the question i have is, how can i use the same class container twice in the same page and have everything up to standards?

the catch is the doctype has to be XHTML 1.0 Transitional and i can't have the same id twice on the page. i'd hate to make 2 classes for the same style.

any suggestions?

Code:

<ul id="headerfooter">
<li><a href="link1.html">header link 1</a></li>
<li><a href="link2.html">header link 2</a></li>
<li><a href="link3.html">header link 3</a></li>
</ul>

Code:

<ul id="headerfooter">
<li><a href="link1.html">footer link 1</a></li>
<li><a href="link2.html">footer link 2</a></li>
<li><a href="link3.html">footer link 3</a></li>
</ul>

I cant use this statement below to import a style sheet properly. What happens is that it works for all elements except for the class tag lbox.
Why does th class tag get ignored from importing in a file but works when in the file.
So the css code does work but not when i import a file which is in the current dir.

<link rel="stylesheet" type="text/css" href="mystyle.css"/> //ignores the class tag lbox.

The file is

<style type="text/css">

.lbox {
position:relative;
width:120px;
height:155px;
background: red;
z-index:2;
left: 10px;
border:2px solid black;
top: 15px;
margin-bottom:15px;
/*dont use padding or top because this fails to space eachbox*/
}

...
</style>


html
..
<div id="boxlayer1" >
<div id="boxlayer2" class="lbox">5eareresae56</div>
<div id="boxlayer3" class="lbox">reerertertert</div>
<div id="boxlayer4" class="lbox">retererertert</div>
</div>

Thanks for taking the time to read my question.

I can never seem to get this right....

I have this line that I want to affect:

Code:

<li><div class="VACont"><a href="">Edit User</a></div></li>

and I want to be able to edit it with

a:link {}
a:visited {}
a:hover {}
a:active {}

How do I refer to the link with out having to add a class to the <a> tag?

I've tried:
Code:

VACont.a:link {text-decoration: none;}
li.VACont a:link {text-decoration: none;}
a:link li.VACont {text-decoration: none;}

So far no luck.

Thanks,

Brad

Hi all

Another stupid annoyance relating Internet Explorer: it seems IE6 does not recognize the following CSS selector rule:

tag#id.class

e.g.

div#content.active

One has to split it into

div#content .active

Is that right? Do we just have to live with this?

Greetings,
Josh

Hi .. Im still new to all of this (Web and CSS in general) but would like to know if the following is a possiblity... assuming the CSS Below ...

div#item{
width: 200px;
height:100px;
}

div#item_image{
width:50px;
height:100px;
background-image:url(blahblah);
}

div#item_text{
width: 140px;
height:100px;
(...other properties)
}

then when I create an instance of this i use the following HTML

<div id = "item">
<div id = "item_image>
</div>
<div id = "item_text>
</div>
</div>

I know its maybe not the best way to do it .. but im trying to illustrate a point ... each time I create an "item" I am required to redeclare or redefine the child divs ... is there any way I can "embed" (for lack of a better word !) the children so that everytime I create an "item" it automatically creates the "item_image" and "item_text"

so basically .. my HTML will just be

<div id = "item"></div>

and nothing else ??

Thanks for any guidance ...

I am trying to add sub navigation to my footer area. I tried codes below but didnt work. http://www.pearl.ru/isdunyasi/

#footer {
width:800px;
font-size:10px;
color:#aaaaaa;
}
#footer .navigation{
width:800px;
background:#aaaaaa;
}
#footer .navigation li{
float:left;
list-style-type:none;
border-right:1px solid #ffffff;
white-space:nowrap;
}
#footer .navigation li a{
display:block;
padding:0 5px;
font-size:12px;
text-transform:uppercase;
color: #FFFFFF;
}
#footer p {
padding:0;
margin:0;
text-align:center;
}