Structure and Formatting of a CSS Rule
CSS Structure and Formatting
Property Lists
Some properties can take multiple values, collectively known as a property list.
/* Two values in this property list */
span {
text-shadow: yellow 0 0 3px, green 4px 4px 10px;
}
/* Alternate Formatting */
span {
text-shadow:
yellow 0 0 3px,
green 4px 4px 10px;
}
CSS Multiple Selectors
When you group CSS selectors, you apply the same styles to several different elements without repeating the styles in your style sheet. Use a comma to separate multiple grouped selectors.
div, p { color: blue }
So the blue color applies to all <div> elements and all <p> elements. Without the comma only <p> elements that are a child of a <div> would be red.
This also applies to all types of selectors.
p, .blue, #first, div span{ color : blue }
This rule applies to:
- <p>
- elements of the blue class
- element with the ID first
- every <span> inside of a <div>
Rules, Selectors, and Declaration Blocks
A CSS rule consists of a selector (e.g. h1) and declaration block ({}).
h1 {}
Css Comments
Single Line comments
/* This is a CSS comment */
div {
color: red; /* This is a CSS comment */
}
Multiple Line comments
/*
This
is
a
CSS
comment
*/
div
{
color: red;
}
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