减少不必要的代码

Former-commit-id: 8c704c1c9e29c1f8887eb3b899977b35b8a5e4bd

src/assets/style/fixed/base.scss

@@ -0,0 +1,13 @@
+// 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;
+    }
+  }
+}

src/assets/style/fixed/element.scss

@@ -0,0 +1,16 @@
+// element 样式补丁
+
+.el-card {
+  &.is-always-shadow {
+    box-shadow: 0 0 8px 0 rgba(232,237,250,.6), 0 2px 4px 0 rgba(232,237,250,.5);
+  }
+  &.is-hover-shadow {
+    &:hover {
+      box-shadow: 0 0 8px 0 rgba(232,237,250,.6), 0 2px 4px 0 rgba(232,237,250,.5);
+    }
+  }
+}
+
+.el-menu--horizontal {
+  border-bottom: none !important;
+}