修改

src/styles/index.scss

@@ -330,7 +330,26 @@ aside {
   color:#FFF;
   background-color: #172434;
 }
+.el-popper{
+  border:1px solid #443e3e;
+}
+.el-picker-panel *[slot=sidebar]{
+  border:1px solid #443e3e;
+}
+.el-picker-panel__sidebar,.el-date-range-picker__content.is-left{
+  border-right:1px solid #443e3e;
 
+}
+.el-date-range-picker__time-header{
+  border-bottom:1px solid #443e3e;
+}
+.el-picker-panel__footer{
+  border-top:1px solid #443e3e;
+}
+.el-date-table th{
+  border-bottom:1px solid #443e3e;
+
+}
 .el-select-dropdown__wrap,.el-cascader-menu__wrap{
   color:#FFF !important;
   background-color: #172434 !important;