.wave {
        posITion: relative; 
    width: 200px;
    height: 200px;
    background: @color;
    border: 5px solid #76daff;
    border-radius: 50%;
    overflow: hidden;
}
.wave-box::before,
.wave-box::after {
      content: '';
      position: absolute;
      top: 0;
      left: 50%;
      width: 400px;
      height: 400px;
      border-radius: 45%;
      -webkit-transform: translate(-50%, -70%);
      transform: translate(-50%, -70%);
      background: rgba(255, 255, 255, 0.5);
      -webkit-animation: rotate 10s linear infinite;
      animation: rotate 10s linear infinite;
      z-index: 10;
}
@keyframes rotate {
  50% {
            -webkit-transform: translate(-50%, -75%) rotate(180deg);
            transform: translate(-50%, -75%) rotate(180deg);
  }
  100% {
            -webkit-transform: translate(-50%, -70%) rotate(180deg);
            transform: translate(-50%, -70%) rotate(180deg);
  }
}
//或者使用预编译语言更方便，这里使用less
.wave(@width; @height; @color) {
    position: relative; 
    width: @width;
    height: @height;
    background: @color;
    border: 5px solid @color;
    border-radius: 50%;
    overflow: hidden;
    &::before,
    &::after {
        content: '';
        position: absolute;
        top: 0;
        left: 50%;
        width: @width * 2;
        height: @height * 2;
        border-radius: 45%;
        transform: translate(-50%, -70%);
        background: rgba(255,255,255,0.5);
        animation: rotate 10s linear infinite;
        z-index: 10;
    }
    &::after {
        border-radius: 47%;
        background: rgba(255,255,255,0.5);
        animation: rotate 10s linear -5s infinite;
        z-index: 20;
    }
}
//调用
.wave-box {
    .wave(200px; 200px; #76daff);
}
<!-- 页面上调用 -->
<div class="wave-box"></div>