Now that we understand the benefits of CSS icons, let’s explore some common techniques for implementing them:

1.  Icon Fonts:
Icon fonts, such as Font Awesome and Material Icons, are sets of vector icons embedded in a font format. By including the font file in your project and applying the appropriate CSS classes, you can effortlessly integrate a wide range of icons into your web pages.

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.3/css/all.min.css">
<i class="fas fa-heart"></i>

2. CSS Pseudo-elements:
CSS pseudo-elements, such as ::before and ::after, can be used to insert icons directly into HTML elements without the need for additional markup. This technique is particularly handy for decorative icons or icons associated with links.

custom-icon::before {
content: '\2022'; /* Unicode character for a bullet point, can be replaced with other icons */
color: #3498db;
font-size: 20px;
margin-right: 5px;
}

3. SVG Icons:
Scalable Vector Graphics (SVG) provide a lightweight and resolution-independent option for icons. SVG icons can be embedded directly into HTML or referenced in the CSS background property.

svg-icon {
background: url('icon.svg') no-repeat;
width: 24px;
height: 24px;
}