在模板文件common目录的extend_common.css最下方添加代码

.kmewm {

  position:relative;

}

.kmewm::before,

.kmewm::after {

  content:"";

  border:2px solid;

  border-image:linear-gradient(45deg,gold,deeppink) 1;

  position:absolute;

  top:-5px;

  left:-5px;

  right:-5px;

  bottom:-5px;

  animation:clippath 3s infinite;

}

.kmewm::before {

  animation:clippath 3s infinite -1.5s linear;

}

@keyframes clippath {

  0%,

  100% {

    clip-path:inset(0 0 96% 0);

    filter:hue-rotate(0deg);

  }

  25% {

    clip-path:inset(0 96% 0 0);

  }

  50% {

    clip-path:inset(96% 0 0 0);

    filter:hue-rotate(360deg);

  }

  75% {

    clip-path:inset(0 0 0 96%);

  }

}