css attribute with class code example

Example 1: css attribute selector

a[target="_blank"] {
  background-color: yellow;
}
/*w3schools*/

Example 2: css class attribute

<h1 class="Class">Content</h1>
<h1 id="id">Content</h1>
Css: 
.class
#id

Example 3: css atrubute selector

css attribute selector