上升的方块动态背景
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* { margin: 0; padding: 0; border: none; outline: 0; } body{ width: 100vw; height: 100vh; background: url(img/bg.png) no-repeat; background-size: cover; } #F-dynamicbg-box { width: 100vw; height: 100vh; position: absolute; top: 0; left: 0; overflow: hidden; } #F-dynamicbg-box > div { z-index: -9999; background-color: rgba(255,255,255,.1); position: absolute; top: 105vh; animation: dynamicDiv 30s linear infinite; } #F-dynamicbg-box > div:nth-of-type(1) { animation-delay: 1s } #F-dynamicbg-box > div:nth-of-type(2) { animation-delay: 3s } #F-dynamicbg-box > div:nth-of-type(3) { animation-delay: 6s } #F-dynamicbg-box > div:nth-of-type(4) { animation-delay: 9s } #F-dynamicbg-box > div:nth-of-type(5) { animation-delay: 12s } #F-dynamicbg-box > div:nth-of-type(6) { animation-delay: 4s } #F-dynamicbg-box > div:nth-of-type(7) { animation-delay: 15s } #F-dynamicbg-box > div:nth-of-type(8) { animation-delay: 18s } #F-dynamicbg-box > div:nth-of-type(9) { animation-delay: 20s } #F-dynamicbg-box > div:nth-of-type(10) { animation-delay: 16s } @keyframes dynamicDiv { form { top: 105vh; transform: scale(1.2); } to { top: -13vh; transform: scale(1) rotate(60deg); } }
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<body> <div id="F-dynamicbg-box"> <div></div> <div></div> <div></div> <div></div> <div></div> <div></div> <div></div> <div></div> <div></div> <div></div> </div> </body>
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