amis/packages/amis-ui/scss/components/_avatar.scss

@mixin avatar-size($size, $fontSize) {
  width: $size;
  height: $size;
  line-height: $size;

  i {
    font-size: $fontSize;
  }
}

.#{$ns}Avatar {
  background: var(--Avatar-bg);
  @include avatar-size(var(--Avatar-size-default), var(--Avatar-icon-size-default));
  position: relative;
  display: inline-block;
  overflow: hidden;
  flex-shrink: 0;
  border-radius: 50%;
  text-align: center;

  &--lg {
    @include avatar-size(var(--Avatar-size-large), var(--Avatar-icon-size-large));
  }

  &--sm {
    @include avatar-size(var(--Avatar-size-small), var(--Avatar-icon-size-small));
  }

  &--text {
    position: absolute;
    left: 50%;
    transform-origin: 0 center;
  }

  &--square {
    border-radius: 0%;
  }

  &--rounded {
    border-radius: 10%;
  }

  img {
    width: 100%;
    height: 100%;
  }

  &:hover {

    img,
    i {
      transform: scale(1.1);
    }
  }
}