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ID Selectors in CSS
You can define style rules based on the id attribute of the elements. All the elements having that id will be formatted according to the defined rule.
#black { color: #000000; }
This rule renders the content in black for every element with id attribute set to black in our document. You can make it a bit more particular. For example:
h1#black {
color: #000000;
}This rule renders the content in black for only <h1> elements with id attribute set to black.
The true power of id selectors is when they are used as the foundation for descendant selectors, For example:
#black h2 {
color: #000000;
}In this example, all level 2 headings will be displayed in black color when those headings will lie within tags having id attribute set to black.
Updated on: 30-Jan-2020
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