样式修改：调整首页系统图标居中显示；

src/components/tools/Logo.vue

@@ -47,7 +47,7 @@
       height: @height !important;
 	    //width: 500px;
 	    width: 100vw;
-      line-height: @height !important;
+      line-height: 55px !important;
       box-shadow: none !important;
       transition: background 300ms;