button css click code example

Example 1: css on click

<!DOCTYPE html>
<html>
<head>
  <style>
    /* On click: */
    a:active {
      background-color: yellow;
    }
    button:focus {
      background-color: yellow;
    }
    /* On hover: */
    h1:hover {
      background-color: red;
    }
    p:hover {
      background-color: red;
    }
  </style>
</head>
<body>
  <a href="#">Click Me</a>
  <button>Click me</button>
  
  <h1>Hover over me</h1>
  <p>Hover over me</p>
</body>
</html>

Example 2: how to add animation to a button hover

.btn {
  background-color: #ddd;
  border: none;
  color: black;
  padding: 16px 32px;
  text-align: center;
  font-size: 16px;
  margin: 4px 2px;
  transition: 0.3s;
}

.btn:hover {
  background-color: #3e8e41;
  color: white;
}

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Html Example