CSS重置,常见元素的默认样式

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

.navbar, .offcanvas, .tabbar, .nav, .breadcrumbs, .brand, .pagination, .alert,
.btn, .form-group, label, .popover, .list-group-item, .table td, .table th,
.dropdown-menu, .badge, .pager, .progress, .media, .modal, .card, .breadcrumb,
.card .card-header, .card-body, .button-dropdown, .table-responsive, .icheck,
.select2-container, .datepicker, .timepicker-picker, .input-group-append, .input-group-prepend,
.icheck-default, .uneditable-input, .input-group-text {
  border: none;
  margin: 0;
  padding: 0;
  font-family: inherit;
  line-height: inherit;
}

/* 重置全局样式 */
* {
    margin: 0; /* 取消边距 */
    padding: 0; /* 取消内边距 */
    box-sizing: border-box; /* 适应边框 */
    font-family: Arial, sans-serif; /* 统一字体 */
  }