样式调整

src/components/app-mob-select-drop-down/app-mob-select-drop-down.less

@@ -6,7 +6,7 @@
     background-color: transparent;
     position: absolute;
     right: 12px;
-    top: calc(50% - 9px);
+    top: calc(50% - 1px);
     transform: translateY(-50%);
     z-index: 9998;
     display: flex;