實現如圖所示的動畫效果:
在兩個不同方向旋轉的圓圈。我們對內圈的轉速定義了一個CSS代碼,即內圈比外圈的速率快2倍。
實作如圖所示:
html程式碼:
<body style="background: #ffb83c;"> <p id="preloader-1"> <span></span> <span></span> </p></body>
css程式碼:
#preloader-1{ position: relative; }#preloader-1 span{ position: absolute; border:8px solid #fff; border-top:8px solid transparent; border-radius: 999px; }#preloader-1 span:nth-child(1){ width:80px; height: 80px; animation: spin-1 2s infinite linear; }#preloader-1 span:nth-child(2){ top:20px; left:20px; width:40px; height: 40px; animation: spin-2 1s infinite linear; }@keyframes spin-1{ 0%{transform: rotate(360deg); opacity: 1.0;} 50%{transform: rotate(180deg); opacity: 0.5;} 100%{transform: rotate(0deg);opacity: 0;}} @keyframes spin-2{ 0%{transform: rotate(0deg); opacity: 0.5;} 50%{transform: rotate(180deg); opacity: 1;} 100%{transform: rotate(360deg);opacity: 0.5;}}動畫進行交錯每個圓圈都設定了單獨的反向移動動畫參數。
效果:
html代碼:
<body style="background: #4ad3b4;"> <p id="preloader-2"> <span></span> <span></span> </p></body>css代碼:
#preloader-2{ position: relative; }#preloader-2 span{ position: absolute; width:30px; height: 30px; background: #fff; border-radius: 999px; }#preloader-2 span:nth-child(1){ animation: cross-1 1.5s infinite linear; }#preloader-2 span:nth-child(2){ animation: cross-2 1.5s infinite linear; }@keyframes cross-1{ 0%{transform: translateX(0); opacity: 0.5;} 50%{transform: translateX(80px); opacity: 1;} 100%{transform: translateX(0);opacity: 0.5;}} @keyframes cross-2{ 0%{transform: translateX(80px); opacity: 0.5;} 50%{transform: translateX(0); opacity: 1;} 100%{transform: translateX(80px);opacity: 0.5;}}
html代碼:
<body style="background: #ab69d9;"> <p id="preloader-3"> <span></span> </p></body>
#preloader-3{ position: relative; width:80px; height: 80px; border:4px solid rgba(255,255,255,.25); border-radius: 999px; }#preloader-3 span{ position: absolute; width:80px; height:80px; border:4px solid transparent; border-top:4px solid #fff; border-radius: 999px; top:-4px; left:-4px; animation: rotate 1s infinite linear; }@keyframes rotate{ 0%{transform: rotate(0deg);} 100%{transform: rotate(360deg);}}預載動畫四:跳動圈這是一種墨西哥波浪紋的動畫效果,透過設定不同圓圈之間的延遲參數來實現。
效果:
html代碼:<body style="background: #c1d64a;"> <p id="preloader-4"> <span></span> <span></span> <span></span> <span></span> <span></span> </p></body>css代碼:
蟎
#preloader-4{ position: relative; }#preloader-4 span{ position:absolute; width:16px; height: 16px; border-radius: 999px; background: #fff; animation: bounce 1s infinite linear; }#preloader-4 span:nth-child(1){ left:0; animation-delay: 0s; }#preloader-4 span:nth-child(2){ left:20px; animation-delay: 0.25s; }#preloader-4 span:nth-child(3){ left:40px; animation-delay: 0.5s; }#preloader-4 span:nth-child(4){ left:60px; animation-delay: 0.75s; }#preloader-4 span:nth-child(5){ left:80px; animation-delay: 1.0s; }@keyframes bounce{ 0%{transform: translateY(0px);opacity: 0.5;} 50%{transform: translateY(-30px);opacity: 1.0;} 100%{transform: translateY(0px);opacity: 0.5;}}
設定相同的淡入淡出效果,再予每個稍微延遲下即可實現。 效果:
html程式碼:<body style="background: #f9553f;"> <p id="preloader-5"> <span></span> <span></span> <span></span> </p></body>css代碼:
#preloader-5{ position: relative; }#preloader-5 span{ position:absolute; width:50px; height: 50px; border:5px solid #fff; border-radius: 999px; opacity: 0; animation: radar 2s infinite linear; }#preloader-5 span:nth-child(1){ animation-delay: 0s; }#preloader-5 span:nth-child(2){ animation-delay: 0.66s; }#preloader-5 span:nth-child(3){ animation-delay: 1.33s; }@keyframes radar{ 0%{transform: scale(0);opacity: 0;} 25%{transform: scale(0);opacity: 0.5;} 50%{transform: scale(1);opacity: 1.0;} 75%{transform: scale(1.5);opacity: 0.5;} 100%{transform: scale(2);opacity: 0;}}
css代碼:
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css代碼: