body{
    background-color: #03a;
    height: 50px;
}
#form{
    background-color: white;
    width: 15%;
    margin: 10px auto;
    padding: 60px;
    box-shadow: 10px, 10px, 5px #81d4fa;
    border-radius: 6px;
}
#btn{
    color:#03a;
    border-color: aliceblue;
    width: 170px;
}
@media screen and (max_width:766px){
    #form{
        width:60%;
        padding:30px;
    }
}