amis/packages/amis-ui/scss/components/_json-schema.scss

.#{$ns}JSONSchemaMember {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  gap: var(--gap-sm);

  &-key {
    min-width: 80px;
    max-width: 150px;
    flex: 1;

    & > span {
      display: flex;
      background: var(--Form-input-bg);
      border: var(--Form-input-borderWidth) solid var(--Form-input-borderColor);
      border-radius: var(--Form-input-borderRadius);
      // height: var(--Form-input-height);
      line-height: var(--Form-input-lineHeight);
      padding: var(--Form-input-paddingY) var(--Form-input-paddingX);
      font-size: var(--Form-input-fontSize);
      flex-wrap: wrap;
      justify-content: flex-start;
      align-items: center;

      color: var(--Form-input-color);
    }
  }

  &-value {
    flex: 1;
    margin-left: auto;
    display: flex;
    gap: var(--gap-sm);

    > a {
      display: inline-block;
    }

    > div {
      flex: 1;
      flex-wrap: nowrap;
    }
  }

  & + & {
    margin-top: var(--gap-sm);
  }
}

.#{$ns}JSONSchemaObject {
  &-caret {
    display: inline-block;
    height: px2rem(24px);
    text-align: center;
    line-height: px2rem(24px);
    vertical-align: middle;
    cursor: pointer;
    transform: rotate(0deg);
    transition: transform var(--animation-duration);
    color: var(--icon-color);
    margin-top: calc((var(--Form-input-height) - var(--Switch-height)) / 2);

    > svg {
      width: 10px;
      height: 10px;
      top: 0;
    }
  }

  &-caret.is-collapsed {
    transform: rotate(-90deg);
  }

  &.is-expanded {
    position: relative;
    margin-left: px2rem(20px);

    &:before {
      width: 1px;
      content: '';
      display: block;
      position: absolute;
      top: 30px;
      bottom: 10px;
      left: -33px;
      border-left: dashed 1px var(--icon-color);
    }

    & .#{$ns}JSONSchemaMember {
      position: relative;
    }

    & .#{$ns}JSONSchemaMember:before {
      height: 1px;
      content: '';
      display: block;
      position: absolute;
      top: 17px;
      width: 25px;
      left: -33px;
      border-top: dashed 1px var(--icon-color);
    }

    & .#{$ns}JSONSchemaMember:first-child:before {
      left: -20px;
      width: 12px;
    }

    & > button {
      position: relative;

      &:before {
        height: 1px;
        content: '';
        display: block;
        position: absolute;
        top: 10px;
        width: 25px;
        left: -33px;
        border-top: dashed 1px var(--icon-color);
      }
    }
  }
}