d1 width 100px height 100px position relative background-color green m

#d1
{
    width:100px;
    height:100px;
    position:relative;
    background-color:green;
    margin: 50px auto 0px;
}
.bt1{
	margin-top: 10px;
	margin-left: 47%;
	float: left;
}
.bt2{
	margin-top: 10px;
	margin-left: 1%;
}