strapi/packages/strapi-plugin-upload/admin/src/components/List/styles.scss

.listWrapper {
  margin-top: 9px;
  padding: 0;

  > div:first-child {
    margin: 0;
  }
}

.ulList {
  width: 100%;
  padding: 0 !important;
  list-style: none;
  > li {
    width: 100%;
    margin-top: 0;
  }

  > li:last-child {
    > div {
      border-bottom: 0 !important;
    }
  }
}