CSS屬性繪制圖形

<p class="react-logo">
 <p class="reactive"></p></p>

html, body{
 width: 100%;
 height: 100%;
 min-height: 100%;
 font-family: 'Gloria Hallelujah', cursive;
 font-size: 100%;
 background-color: #222;
 display: flex;
 align-items: center;
 justify-content: center;
}.react-logo{
 width: 500px;
 height: 160px;
 position: relative;
 border: 15px solid #fff;
 border-radius: 50%;
 box-shadow: #00d8ff 0px 0px 44px 0px;
}.react-logo:before{
 content: "";
 width: 500px;
 height: 160px;
 position: absolute;
 border: 15px solid #aaa;
 border-radius: 50%;
 transform: rotate(125deg);
 top: -25px;
 left: -18px;
 box-shadow: #00d8ff 0px 0px 44px 0px;
}.react-logo:after{
 content: "";
 width: 500px;
 height: 160px;
 position: absolute;
 border: 15px solid #00d8ff;
 border-radius: 50%;
 transform: rotate(-125deg);
 top: -25px;
 left: -18px;
 box-shadow: #00d8ff 0px 0px 44px 0px;
}.reactive{
 width: 100px;
 height: 100px;
 float: left;
 background-color: #aaf;
 border-radius: 50%;
 margin-left: calc(50% - 50px);
 margin-top: 30px;
 box-shadow: #00d8ff 0px 0px 44px 0px;
}