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CSS Optimization

CSS optimization involves techniques to reduce file size and improve page load speed.

CSS Optimization

Optimizing CSS is crucial for website performance. Smaller CSS files load faster, improving the user experience.

1. Minification

Minification removes unnecessary characters (whitespace, comments, newlines) from the code without changing its functionality.

Original:

body {
  background-color: white;
  color: black;
}

Minified:

body{background-color:white;color:black;}

2. Use Shorthand Properties

Using shorthand properties reduces the amount of code.

Instead of:

margin-top: 10px;
margin-right: 20px;
margin-bottom: 10px;
margin-left: 20px;

Use:

margin: 10px 20px;

3. Avoid @import

Using @import prevents stylesheets from being downloaded in parallel, slowing down page load. Use <link> instead.

4. Remove Unused CSS

Delete styles that are no longer used in your HTML to keep the file size small.

Example

/* Shorthand Example */
padding: 10px 20px 15px 5px;
/* Top Right Bottom Left */