CSS3 实现飘动的云朵动画

时间：2021-05-08

运行效果

html

<head> <meta charset='UTF-8'> <title>CSS3 Cloud Animations By Montana Flynn</title></head><body> <div class="sky"> <div class="moon"></div> <div class="clouds_two"></div> <div class="clouds_one"></div> <div class="clouds_three"></div> </div></body>

css

html, body { margin: 0; height: 100%}.sky { height: 480px; background: #007fd5; position: relative; overflow: hidden; -webkit-animation: sky_background 50s ease-out infinite; -moz-animation: sky_background 50s ease-out infinite; -o-animation: sky_background 50s ease-out infinite; -webkit-transform: translate3d(0, 0, 0); -moz-transform: translate3d(0, 0, 0); -o-transform: translate3d(0, 0, 0)}.moon { background: url("http://i.imgur.com/wFXd68N.png"); position: absolute; left: 0; height: 300%; width: 300%; -webkit-animation: moon 50s linear infinite; -moz-animation: moon 50s linear infinite; -o-animation: moon 50s linear infinite; -webkit-transform: translate3d(0, 0, 0); -moz-transform: translate3d(0, 0, 0); -o-transform: translate3d(0, 0, 0)}.clouds_one { background: url("http://www.scri8e.com/stars/PNG_Clouds/zc06.png?filename=./zc06.png&w0=800&h0s=289&imgType=3&h1=50&w1=140"); position: absolute; left: 0; top: 0; height: 100%; width: 300%; -webkit-animation: cloud_one 50s linear infinite; -moz-animation: cloud_one 50s linear infinite; -o-animation: cloud_one 50s linear infinite; -webkit-transform: translate3d(0, 0, 0); -moz-transform: translate3d(0, 0, 0); -o-transform: translate3d(0, 0, 0)}.clouds_two { background: url("http://freepngimages.com/wp-content/uploads/2016/02/clouds-transparent-background-2.png"); position: absolute; left: 0; top: 0; height: 100%; width: 300%; -webkit-animation: cloud_two 75s linear infinite; -moz-animation: cloud_two 75s linear infinite; -o-animation: cloud_two 75s linear infinite; -webkit-transform: translate3d(0, 0, 0); -moz-transform: translate3d(0, 0, 0); -o-transform: translate3d(0, 0, 0)}.clouds_three { background: url("http://montanaflynn.me/lab/css-clouds/images/cloud_three.png"); position: absolute; left: 0; top: 0; height: 100%; width: 300%; -webkit-animation: cloud_three 100s linear infinite; -moz-animation: cloud_three 100s linear infinite; -o-animation: cloud_three 100s linear infinite; -webkit-transform: translate3d(0, 0, 0); -moz-transform: translate3d(0, 0, 0); -o-transform: translate3d(0, 0, 0)}@-webkit-keyframes sky_background { 0% { background: #007fd5; color: #007fd5 } 50% { background: #000; color: #a3d9ff } 100% { background: #007fd5; color: #007fd5 }}@-webkit-keyframes moon { 0% { opacity: 0; left: -200% -moz-transform: scale(0.5); -webkit-transform: scale(0.5); } 50% { opacity: 1; -moz-transform: scale(1); left: 0% bottom: 250px; -webkit-transform: scale(1); } 100% { opacity: 0; bottom: 500px; -moz-transform: scale(0.5); -webkit-transform: scale(0.5); }}@-webkit-keyframes cloud_one { 0% { left: 0 } 100% { left: -200% }}@-webkit-keyframes cloud_two { 0% { left: 0 } 100% { left: -200% }}@-webkit-keyframes cloud_three { 0% { left: 0 } 100% { left: -200% }}@-moz-keyframes sky_background { 0% { background: #007fd5; color: #007fd5 } 50% { background: #000; color: #a3d9ff } 100% { background: #007fd5; color: #007fd5 }}@-moz-keyframes moon { 0% { opacity: 0; left: -200% -moz-transform: scale(0.5); -webkit-transform: scale(0.5); } 50% { opacity: 1; -moz-transform: scale(1); left: 0% bottom: 250px; -webkit-transform: scale(1); } 100% { opacity: 0; bottom: 500px; -moz-transform: scale(0.5); -webkit-transform: scale(0.5); }}@-moz-keyframes cloud_one { 0% { left: 0 } 100% { left: -200% }}@-moz-keyframes cloud_two { 0% { left: 0 } 100% { left: -200% }}@-moz-keyframes cloud_three { 0% { left: 0 } 100% { left: -200% }}

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