/** 加载框 */
.l-loading-inner {
  --l-loading-color: var(--l-primary-color, #722ed1);
  display: inline-block;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  border: 2px solid var(--l-loading-color);
  border-radius: var(--l-loading-border-radius, 0);
  animation: borderLoadingAnim var(--l-loading-timing, 5s) infinite linear;
}
@keyframes borderLoadingAnim {
  0%,
  100% {
    clip: rect(0 var(--l-loading-width) 2px 0);
  }
  25% {
    clip: rect(
      0 var(--l-loading-width) var(--l-loading-height)
        calc(var(--l-loading-width) - 2px)
    );
  }
  50% {
    clip: rect(
      calc(var(--l-loading-height) - 2px) var(--l-loading-width)
        var(--l-loading-height) 0
    );
  }
  75% {
    clip: rect(0 2px var(--l-loading-height) 0);
  }
}