vue-vben-admin/src/design/theme.less

.bg-white {
  background-color: @component-background !important;
}

html[data-theme='light'] {
  .text-secondary {
    color: rgb(0 0 0 / 45%);
  }

  .ant-alert-success {
    border: 1px solid #b7eb8f;
    background-color: #f6ffed;
  }

  .ant-alert-error {
    border: 1px solid #ffccc7;
    background-color: #fff2f0;
  }

  .ant-alert-warning {
    border: 1px solid #ffe58f;
    background-color: #fffbe6;
  }

  :not(:root):fullscreen::backdrop {
    background-color: @layout-body-background !important;
  }
}