.main{
    width: 80%;
    height: 400px;
}
.colomn{
    border: 2px solid black;
    height: 63px;
}

#first{
    background-color: white;
}
#second{
    background-color: white;
}
#third{
    background-color: white;
}

#fourth{
    background-color: white;
}