CSS code for flat button for aw8 site

.button {
    display: inline-block;
    padding: 10px 20px;
    background-color: #3498db;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.button:hover {
    background-color: #2980b9;
}