.parent {
    border: 1px solid #666;
    background: #eee;
    padding: 20px;
    font-family: sans-serif;
}

.parent div {
    margin-bottom: 10px;
}

.parent button {
    background: tomato;
    color: #fff;
    border: 0;
    border-radius: 5px;
    padding: 15px 40px;
}