body{
    background-color:#d7e3e3;
    opacity: 0.8;

}

#triangle div{
    height: 100px;
	width: 100px;
	background-color:coral;
    border: 20px solid red;
    opacity: 0.8;
	margin: 50px;
	float: left;
}
#triangle .one{
     height: 100px;
	width: 100px;
	background-color:#ff91a6;
     opacity: 1;
	border-radius: 50%;
	margin: 50px;
	float: left;
}