d2-admin-start-kit/src/assets/style/fixed/base.scss

// 优化显示
html, body {
  margin: 0px;
  height: 100%;
  font-family: "Arial", "Microsoft YaHei", "黑体", "宋体", sans-serif;
  #app {
    @extend %full;
    a {
      text-decoration: none;
    }
  }
}