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 * { margin: 0; padding: 0; box-sizing: border-box; } body { width: 100%; height: auto; background: #f90; overflow: hidden; } .box { width: 50px; height: 50px; background: #f70; transform: rotate(45deg); position: absolute; box-shadow: 2px 2px 3px rgba(0, 0, 0, 0.3); } .box1 { left: calc(50% - 25px); top: calc(100% - 75px); animation: box1 cubic-bezier(1, 0, 0.45, 1.4) 2s 1; } .box2 { left: calc(50% - 65px); top: calc(100% - 115px); animation: box2 cubic-bezier(1, 0, 0.45, 1.4) 2.5s 1; } .box3 { left: calc(50% + 15px); top: calc(100% - 115px); animation: box3 cubic-bezier(1, 0, 0.45, 1.4) 3s 1; } .box4 { left: calc(50% + 55px); top: calc(100% - 155px); animation: box4 cubic-bezier(1, 0, 0.45, 1.4) 3.5s 1; } .box5 { left: calc(50% - 105px); top: calc(100% - 155px); animation: box5 cubic-bezier(1, 0, 0.45, 1.4) 4s 1; } .box6 { left: calc(50% - 25px); top: calc(100% - 155px); animation: box6 cubic-bezier(1, 0, 0.45, 1.4) 4.5s 1; } @keyframes box1 { from { top: -100px; } to { top: calc(100% - 75px); } } @keyframes box2 { from { top: -100px; } to { top: calc(100% - 115px); } } @keyframes box3 { from { top: -100px; } to { top: calc(100% - 115px); } } @keyframes box4 { from { top: -100px; } to { top: calc(100% - 155px); } } @keyframes box5 { from { top: -100px; } to { top: calc(100% - 155px); } } @keyframes box6 { from { top: -100px; } to { top: calc(100% - 155px); } }