65 lines
1.4 KiB
Markdown
65 lines
1.4 KiB
Markdown
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---
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title: Override Class Declarations by Styling ID Attributes
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---
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## Override Class Declarations by Styling ID Attributes
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In order to understand overriding in CSS, you must first understand the principle of precendence in CSS.
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The key rule to remember is that CSS is read from the bottom to top.
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An example of this is:
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```html
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<style>
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body {
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background-color: black;
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font-family: Arial;
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color: black;
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}
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.red-text {
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color: red;
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}
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.blue-text {
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color: blue;
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}
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</style>
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<h1 class="red-text blue-text">Example</h1>
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```
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In the example above, the text `Example` will be in blue because the last added class was `blue-text`.
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<b>It is key to remember that an `id` attribute will take precedence over classes, meaning that it ranks highest.</b>
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You can create an `id` attribute by adding the `#` before the name of the class, like below:
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```html
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<style>
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#purple-text {
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color: purple;
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}
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</style>
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```
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Here is an example to show you how to <b>Override Class Declarations by Styling ID Attributes</b>:
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```html
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<style>
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body {
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background-color: black;
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font-family: Arial;
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color: black;
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}
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.red-text {
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color: red;
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}
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.blue-text {
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color: blue;
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}
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#green-color {
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color: green;
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}
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</style>
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<h1 id="green-color" class="red-text blue-text">Example</h1>
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```
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This will make the text `Example` be green because the `id` attribute will always take precedence over `class` declarations.
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