[css] button

HTML

<button class="btn">css button</button>

CSS

.btn {
    background-color: lightseagreen;
    border: 0;
    color: white;
    padding: 10px;
    font-size: 14pt;
    cursor: pointer;
    border-radius: 4px;;
}
.btn:hover {
    background-color: lightcoral;
}
.btn:active {
    background-color: cornflowerblue;
}