stage：侧边栏菜单-=遮挡问题修复

src/assets/styles/sidebar.scss

@@ -26,6 +26,7 @@
     overflow: hidden;
     -webkit-box-shadow: 2px 0 6px rgba(205, 206, 208, 0.35);
     box-shadow: 2px 0 6px rgba(205, 206, 208, 0.35);
+    padding-bottom: 2%;
 
     // reset element-ui css
     .horizontal-collapse-transition {
@@ -70,7 +71,8 @@
       width: 100% !important;
     }
 
-    .el-menu-item, .el-submenu__title {
+    .el-menu-item,
+    .el-submenu__title {
       overflow: hidden !important;
       text-overflow: ellipsis !important;
       white-space: nowrap !important;
@@ -90,11 +92,11 @@
       }
     }
 
-    & .theme-dark .is-active > .el-submenu__title {
+    & .theme-dark .is-active>.el-submenu__title {
       color: $base-menu-color-active !important;
     }
 
-    & .nest-menu .el-submenu > .el-submenu__title,
+    & .nest-menu .el-submenu>.el-submenu__title,
     & .el-submenu .el-menu-item {
       min-width: $base-sidebar-width !important;
       height: 45px;
@@ -110,7 +112,7 @@
     }
 
     // 暗色风格
-    & .theme-dark .nest-menu .el-submenu > .el-submenu__title,
+    & .theme-dark .nest-menu .el-submenu>.el-submenu__title,
     & .theme-dark .el-submenu .el-menu-item {
       background-color: $base-sub-menu-background !important;
 
@@ -149,7 +151,7 @@
     .el-submenu {
       overflow: hidden;
 
-      & > .el-submenu__title {
+      &>.el-submenu__title {
         padding: 0 !important;
 
         .svg-icon {
@@ -160,8 +162,8 @@
 
     .el-menu--collapse {
       .el-submenu {
-        & > .el-submenu__title {
-          & > span {
+        &>.el-submenu__title {
+          &>span {
             height: 0;
             width: 0;
             overflow: hidden;
@@ -208,13 +210,13 @@
 
 // when menu collapsed
 .el-menu--vertical {
-  & > .el-menu {
+  &>.el-menu {
     .svg-icon {
       margin-right: 16px;
     }
   }
 
-  .nest-menu .el-submenu > .el-submenu__title,
+  .nest-menu .el-submenu>.el-submenu__title,
   .el-menu-item {
     &:hover {
       // you can use $subMenuHover
@@ -223,7 +225,7 @@
   }
 
   // the scroll bar appears when the subMenu is too long
-  > .el-menu--popup {
+  >.el-menu--popup {
     max-height: 100vh;
     overflow-y: auto;
 
@@ -240,4 +242,4 @@
       border-radius: 20px;
     }
   }
-}
+}
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