.app{top:200px;margin:auto;position:relative;transform:rotate(-45deg)}.app,.son1{background:pink;width:300px;height:300px}.son1{border-radius:50%;position:absolute}.sn1{top:-150px}.sn2{left:150px}.sn3{transform:translate(50px,-40px) rotate(45deg);margin:auto;text-align:center;line-height:300px;font-size:30px;font-weight:700}