v1/web/themes/contrib/gin/styles/components/entity_browser.scss

// Entity list in widget and browser selection.
.entities-list {
  &:not(.entities-list--single-item) {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    grid-gap: var(--gin-spacing-m);
    margin-bottom: var(--gin-spacing-m);
  }

  &.entities-list--single-item .item-container {
    max-width: 180px;
  }

  .item-container {
    word-break: break-all;
    position: relative;
    margin: 0;
    min-height: 80px;
    border: 1px solid var(--gin-border-color);
    border-radius: var(--gin-border-l);

    .field__item {
      border: 3px solid transparent;
      border-radius: var(--gin-border-xl);
      overflow: hidden;

      &:hover,
      &:focus {
        border-color: var(--gin-color-primary) !important;
        cursor: pointer;
      }
    }

    &.label {
      padding: var(--gin-spacing-s) var(--gin-spacing-xxl) var(--gin-spacing-s) var(--gin-spacing-s);
    }

    img {
      vertical-align: middle;
    }

    > .entity-browser-remove-selected-entity,
    > .remove-button {
      @include custom-icon-button('trash');
      position: absolute;
      top: 0;
      right: 0;
    }

    > .replace-button,
    > .edit-button {
      @include custom-icon-button('edit');
      position: absolute;
      top: 0;
      right: 2.6rem;
    }
  }
}

// Entity list in table views.
table.entities-list {
  &:not(.entities-list--single-item) {
    display: block;
  }

  td {
    height: auto;
    padding: 10px 12px;
  }
}

// Entity browser view in overlay
.gin-entity-browser {
  .entity-browser-form {
    padding: 0;
    border: 0 none;
    box-shadow: none;

    .page-wrapper > .layout-container {
      margin: 0;
    }

    .views-view-grid {
      .views-col {
        position: relative;
      }
    }

    .view-content {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      grid-gap: var(--gin-spacing-m);
      margin-bottom: var(--gin-spacing-m);
    }

    .views-row {
      border: 1px solid var(--gin-border-color);
      border-radius: calc(var(--gin-border-xl) + 2px);
      position: relative;
      .views-field-thumbnail__target-id {
        &:hover,
        &:focus {
          cursor: pointer;
          border-color: var(--gin-color-primary);
        }
      }

      .views-field-name {
        padding: var(--gin-spacing-xs);
      }

      .views-field-entity-browser-select {
        position: absolute;
        top: 0;
        left: 0;
        margin: var(--gin-spacing-s);

        .form-item {
          margin: 0;
        }
      }
    }

    .media-info {
      word-wrap: break-word;
      font-size: var(--gin-font-size-s);
    }

    .views-field-thumbnail__target-id {
      border: 3px solid transparent;
      border-radius: var(--gin-border-xl);
      overflow: hidden;

      &:hover,
      &:focus {
        border-color: var(--gin-color-primary);
      }
    }

    .entities-list {
      border-top: var(--gin-border-xs) solid var(--gin-border-color-form-element);
      padding-top: var(--gin-spacing-m);
    }
  }

  .views-exposed-form {
    box-shadow: none;
  }
}

// Widget sorting.
.field--widget-entity-browser-entity-reference {
  .entities-list.sortable {

    .item-container,
    .field__item {
      &:hover,
      &:focus {
        cursor: move;
        opacity: 1;
      }
    }
  }
}

.eb-tabs {
  margin-left: var(--gin-spacing-xxs); // Fix for outline
  margin-bottom: 0.75em;

  ul {
    border-bottom: none; // Remove superflous bottom.
  }
}