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純CSS預載入動畫效果

效果圖

這裡寫圖片描述


<style>
    #loading {
        position:absolute;
        left:0;
        top:0;
        width:100%;
        height:100%;
        background: #121220;
        overflow:hidden;
        z-index:9999;
    }
    /*載入圈*/
    .spinner {
        margin:0 auto;
        width:60px;
        height:60px;
        position
:relative
; top:40%; }
.container1 > div,.container2 > div,.container3 > div { width:15px; height:15px; background-color:#fff; border-radius:100%; position:absolute; -webkit-animation:bouncedelay 1.2s infinite ease-in-out; animation
:bouncedelay 1.2s infinite ease-in-out
; -webkit-animation-fill-mode:both; animation-fill-mode:both; }
.spinner .spinner-container { position:absolute; width:100%; height:100%; } .container2 { -webkit-transform:rotateZ(45deg); transform
:rotateZ(45deg)
; }
.container3 { -webkit-transform:rotateZ(90deg); transform:rotateZ(90deg); } .circle1 { top:0; left:0; } .circle2 { top:0; right:0; } .circle3 { right:0; bottom:0; } .circle4 { left:0; bottom:0; } .container2 .circle1 { -webkit-animation-delay:-1.1s; animation-delay:-1.1s; } .container3 .circle1 { -webkit-animation-delay:-1.0s; animation-delay:-1.0s; } .container1 .circle2 { -webkit-animation-delay:-0.9s; animation-delay:-0.9s; } .container2 .circle2 { -webkit-animation-delay:-0.8s; animation-delay:-0.8s; } .container3 .circle2 { -webkit-animation-delay:-0.7s; animation-delay:-0.7s; } .container1 .circle3 { -webkit-animation-delay:-0.6s; animation-delay:-0.6s; } .container2 .circle3 { -webkit-animation-delay:-0.5s; animation-delay:-0.5s; } .container3 .circle3 { -webkit-animation-delay:-0.4s; animation-delay:-0.4s; } .container1 .circle4 { -webkit-animation-delay:-0.3s; animation-delay:-0.3s; } .container2 .circle4 { -webkit-animation-delay:-0.2s; animation-delay:-0.2s; } .container3 .circle4 { -webkit-animation-delay:-0.1s; animation-delay:-0.1s; } @-webkit-keyframes bouncedelay { 0%,80%,100% { -webkit-transform:scale(0.0) } 40% { -webkit-transform:scale(1.0) } } @keyframes bouncedelay { 0%,80%,100% { transform:scale(0.0); -webkit-transform:scale(0.0); } 40% { transform:scale(1.0); -webkit-transform:scale(1.0); } }
</style>
<body>
    <div id="loading" >
        <div class="spinner">
          <div class="spinner-container container1">
            <div class="circle1"></div>
            <div class="circle2"></div>
            <div class="circle3"></div>
            <div class="circle4"></div>
          </div>
          <div class="spinner-container container2">
            <div class="circle1"></div>
            <div class="circle2"></div>
            <div class="circle3"></div>
            <div class="circle4"></div>
          </div>
          <div class="spinner-container container3">
            <div class="circle1"></div>
            <div class="circle2"></div>
            <div class="circle3"></div>
            <div class="circle4"></div>
          </div>
        </div>
    </div>
</body>