:root{font-size:18px}body{margin:0;background-color:#acbbd9;background-size:100vw 100vh;overflow:hidden!important}.outer-ellipse{position:absolute;top:37%;right:13%;width:1000px;height:450px;border-radius:50%;transform:rotate(-8deg);overflow:hidden;background-color:transparent}.UFO{position:absolute;top:calc(50% - 50px);left:calc(50% - 50px);width:100px;height:20px;cursor:pointer}