As I work on creating a custom WordPress theme, I came across this code snippet in the default 2010 style.css:
#wrapper {
margin: 0 auto;
width: 940px;
}
#wrapper {
background: pink;
margin-top: 20px;
padding: 0 20px;
}
It's interesting to see this default code (except for the pink color). When attempting to condense it, it has a noticeable impact.
What baffles me is WHY someone would declare the same element twice like that? This is new to me...
WR!
Utilizing shared properties across multiple elements can be incredibly beneficial. Another useful use case is incorporating stylesheets from various sources.
For example:
#head, #foot {
height: 100px;
}
#foot { /*Another foot*/
color: red;
}
Here's another scenario: combining CSS from different sources:
/* External stylesheet: common.css */
body {
background: yellow;
}
/* Inline stylesheet, overrides external stylehseet */
body {
background: pink;
}
If two properties have equal specificity, the one declared last will take precedence.
It simply replaces any properties that were declared before.
In this case, the element wrapper will be styled with a margin of 20px on top, auto on the right, 0 on the bottom, and auto on the left.
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