动态边框效果-渐变环绕

<div className={styles.father_box_two}>
  <div className={styles.box_two}>内容内容</div>
</div>

.father_box_two{
  width: 100px;
  height: 100px;
  line-height: 100px;
  // border-radius: 10%;
  overflow: hidden;
  position: relative;
  background-color: rgba(0,0,0,.06);
  .box_two{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transform-origin: center center; // 一中心未基点
    transform: scale(0.95); // 缩小到原来的 95%
    // border-radius: 10%;
    background-color: #ffffff;
    z-index: 1;
  }
  &::after{
    content: "";
    position: absolute;
    display: inline-block;
    background-color: #1a73e8;
    top: 0;
    left: 0;
    width: 100px;
    height: 5px;
    animation: bgmove 5s linear infinite;
    @keyframes bgmove {
      0% {
        top: 0;
        left: 0;
        width: 100px;
        height: 5px;
      }
      25% {
        top: 0;
        left: 0;
        width: 5px;
        height: 100px;
      }
      50% {
        top: 95px;
        left: 0; 
        width: 100px;
        height: 5px;
      }
      75% {
        top: 0px;
        left: 95px; 
        width: 5px;
        height: 100px;
      }
      100% {
        top: 0;
        left: 0;
        width: 100px;
        height: 5px;
      }
    }
  }
  
  &::before{
    content: "";
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0px;
    left: 0px;
    transform-origin: center center;
    transform: rotate(45deg) scale(2);
    background: conic-gradient(
      #1a73e8,
      rgba(0,0,0,.06),
      rgba(0,0,0,.06),
      rgba(0,0,0,.06)
    );
    animation: rotate 5s linear infinite;
    @keyframes rotate {
      100% {
        transform: rotate(-315deg) scale(2);
      }
    }
  }
}