div class="sand"width: 60vw;height: 10vw;border-radius: 5%;bac kground-image: linear-gradient(#F7E7C3,#FFF0D0,#FFF0D0,#F7E7C3 ;position: absolute;top: 50%;left: 50%;transform: translate(-50%, -200%);margin: 0 auto;