.thumb{
    width: 20%;
    height: 20%;
    padding: 10px;
    
}
.rows{
    top:50px;
    position:relative;
    left:20%;
    
}
#row1{
    position:relative;
    top:80px;
    margin-left: auto;
    margin-right: auto;
}
#row2{
    position:relative;
    top:120px;
     
}