CSS Selector Basics.
CSS selectors are used to target specific HTML elements on a webpage and apply styles to them. Here are some common CSS selectors and how to use them:
1. Element Selector:
The most basic CSS selector targets specific HTML elements. To apply a style to all instances of a particular HTML element, you simply use the element name in your CSS code. For example, to target all paragraphs on a page, you would use:
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p {
/* Styles go here */
}
2. Class Selector:
Class selectors are used to target specific HTML elements that have a particular class assigned to them. To use a class selector, you must first assign a class name to the HTML element using the "class" attribute. Then, you can target that element in your CSS using a period (".") followed by the class name. For example, if you had a class named "highlight" that you wanted to use to highlight certain elements, you could use:
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.highlight {
/* Styles go here */
}
3. ID Selector:
ID selectors are used to target a specific HTML element with a unique ID. To use an ID selector, you must first assign an ID to the HTML element using the "id" attribute. Then, you can target that element in your CSS using a pound sign ("#") followed by the ID name. For example, if you had an ID named "header" that you wanted to use to style the page header, you could use:
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#header {
/* Styles go here */
}
4. Descendant Selector:
A descendant selector targets elements that are children of another element. For example, to target all paragraphs that are inside a div element, you would use:
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div p {
/* Styles go here */
}
5. Adjacent Sibling Selector:
The adjacent sibling selector targets elements that come immediately after another element. For example, to target all list items that come immediately after another list item, you would use:
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li + li {
/* Styles go here */
}
These are just a few examples of the many CSS selectors available. For more information and examples, check out the Mozilla Developer Network (MDN) documentation on CSS selectors.
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