.BLOCK1{
    padding-top: 100px;
    padding-bottom: 100px;
    margin-top: 20px;
    margin-bottom: 20px;
    border-radius: 20px;
}
.BLOCK2{
    background-color: red;
    padding-top: 100px;
    padding-bottom: 100px;
    margin-top: 20px;
    margin-bottom: 20px;
    border-radius: 20px;
}
.BLOCK3{
    background-color: #CCCCCC;
    padding-top: 100px;
    padding-bottom: 100px;
    margin-top: 20px;
    margin-bottom: 20px;
    border-radius: 20px;
}