Code tạo nút đầy màu sắc

<style>

.btn {

border: none; /* Remove borders */

color: white; /* Add a text color */

padding: 14px 28px; /* Add some padding */

cursor: pointer; /* Add a pointer cursor on mouse-over */

}

.success {background-color: #4CAF50;} /* Green */

.success:hover {background-color: #46a049;}

.info {background-color: #2196F3;} /* Blue */

.info:hover {background: #0b7dda;}

.warning {background-color: #ff9800;} /* Orange */

.warning:hover {background: #e68a00;}

.danger {background-color: #f44336;} /* Red */

.danger:hover {background: #da190b;}

.default {background-color: #e7e7e7; color: black;} /* Gray */

.default:hover {background: #ddd;}

</style>

<button class="btn success">Success</button>

<button class="btn info">Info</button>

<button class="btn warning">Warning</button>

<button class="btn danger">Danger</button>

<button class="btn default">Default</button>