body  {
    background-color: aquamarine;
}

#main {
    width: 400px;
    height: 200px;
    padding: 25px;
    margin: 100px auto;
    border: 2px solid #abb9b2#666;
    border-radius: 50px;
    text-align: center;
    box-shadow: 20px 20px 50px #2baf6d, -30px -30px 60px #c5f5dd
}

footer {
    margin: 20px;
    padding: 20px;    
}