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Solved
css redefinition question
Posted on 2004-09-29
This is a 2 part question.
First, how can I or can I set a color and then use that throught my style sheet, something like:
defcolor=#990000
<style>
.css1 {color:defcolor}
.css2 {background-color:defcolor
.
.
</style>
so I do not have to track down this color everywhere if I want to change it.
Question 2
How can I set one style equal to another?
<style>
.css1 {
color:red;
font-size:12;
padding:2;
}
.css2 {
(.css2=.css1)
background-color:blue;
text-align:right;
}
.
.
</style>
I know I can put the css2 in the first section also, but that does not accomplish how I want to manage my styles.
Thanks, Troy
First, how can I or can I set a color and then use that throught my style sheet, something like:
defcolor=#990000
<style>
.css1 {color:defcolor}
.css2 {background-color:defcolor
.
.
</style>
so I do not have to track down this color everywhere if I want to change it.
Question 2
How can I set one style equal to another?
<style>
.css1 {
color:red;
font-size:12;
padding:2;
}
.css2 {
(.css2=.css1)
background-color:blue;
text-align:right;
}
.
.
</style>
I know I can put the css2 in the first section also, but that does not accomplish how I want to manage my styles.
Thanks, Troy
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5 Comments
question 1:
http://www.kryogenix.org/days/2003/07/23/variables
question 2:
.style1, .style2 { margin:0; padding:1em;color:blue; ... }
or
div.style1, #style2 p, .style3 a:hover { color:blue; ... }
That will apply the styles to both/all. To add extra styles beyond the common ones you would add another style declaration:
.style2 { border: 5px green double; }
http://www.kryogenix.org/days/2003/07/23/variables
question 2:
.style1, .style2 { margin:0; padding:1em;color:blue; ... }
or
div.style1, #style2 p, .style3 a:hover { color:blue; ... }
That will apply the styles to both/all. To add extra styles beyond the common ones you would add another style declaration:
.style2 { border: 5px green double; }
You should handle the first one on the server side during generation. Otherwise you will have to use scripting whenever you want to use it. Using variables is really counter to the whole CSS concept of using inheritance to cascade down through the DOM.
For the second you you need to modify the style rule on the fly with scripting. Or you can wait to see if browser manufactures support a larger subset of CSS3 then they have with CSS2. You still won't get variables, but behaviours/imbeded script might be there, if they can figure out how to do it securely.
If you want scripting for part 2, let me know and I will post something.
Cd&
For the second you you need to modify the style rule on the fly with scripting. Or you can wait to see if browser manufactures support a larger subset of CSS3 then they have with CSS2. You still won't get variables, but behaviours/imbeded script might be there, if they can figure out how to do it securely.
If you want scripting for part 2, let me know and I will post something.
Cd&
1: Variables are beyond the scope of CSS. Doesn't your editor have a Search/Replace All functionality?
2: If you want 2 elements to share a lot of common traits, and differ in a few ways:
.css1, .css2 {
color:red;
font-size:12;
padding:2;
}
.css2 {
background-color:blue;
text-align:right;
}
This is the "Cascading" part of "Cascading Style Sheets" . The styles you define cascade down until they are overwritten. Both by one element containing another, or one rule following another.
The first rule there applies styles to .css1 and .css2, the second applies some different ones to just .css2 .
2: If you want 2 elements to share a lot of common traits, and differ in a few ways:
.css1, .css2 {
color:red;
font-size:12;
padding:2;
}
.css2 {
background-color:blue;
text-align:right;
}
This is the "Cascading" part of "Cascading Style Sheets" . The styles you define cascade down until they are overwritten. Both by one element containing another, or one rule following another.
The first rule there applies styles to .css1 and .css2, the second applies some different ones to just .css2 .
Ok, the first question is not supported, I do not think the second is either, but here is what I am trying to do:
<style>
.b10 {
font-size:12;
font-color:#000000;
font-weight:bold;
}
.b10u {
style=.b10;
text-decoration:underline;
)
.b10uc {
style=.b10u;
text-align:center;
)
.b10ur {
style=.b10u;
text-align:right;
)
I know I could have done it like this:
<style>
.b10,.b10u,.b10uc,.b10ur {
font-size:12;
font-color:#000000;
font-weight:bold;
}
.b10u {
text-decoration:underline;
)
.b10uc {
text-align:center;
)
.b10ur {
text-align:right;
)
but I have a good style sheet application that is very extensive if the other is possible.
Thanks, Troy
<style>
.b10 {
font-size:12;
font-color:#000000;
font-weight:bold;
}
.b10u {
style=.b10;
text-decoration:underline;
)
.b10uc {
style=.b10u;
text-align:center;
)
.b10ur {
style=.b10u;
text-align:right;
)
I know I could have done it like this:
<style>
.b10,.b10u,.b10uc,.b10ur {
font-size:12;
font-color:#000000;
font-weight:bold;
}
.b10u {
text-decoration:underline;
)
.b10uc {
text-align:center;
)
.b10ur {
text-align:right;
)
but I have a good style sheet application that is very extensive if the other is possible.
Thanks, Troy
As I said earlier. It cannot be done with straight CSS. You have to use scripting at load time to generate additional properties for the rules using the existing rule as the source. If you want to go a scripting route let me know and I will script it. I don't believe there is going to be a non-scripted solution.
Cd&
Cd&
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