.bloc1{
    height: 400px;
    width: 400px;
    background: #FF0000;
    top: 50%;
    left: 50%;
}
.bloci{
    height: 200px;
    width: 200px;
    background: #FF9933;
    padding-top: 100px;
    padding-left: 100px;
    
}
.bloci2{
    height: 70px;
    width: 70px;
    background: #FFFF99;
    padding-top: 65px;
    padding-left: 65px;
}