修改

@@ -12,7 +12,12 @@
     <style type="text/css">
         .container {
             height: 100%;
+            background: url(../../images/login_bg.png) center no-repeat;
+            background-size: 100% 100%;
+            padding-top: 1rem;
         }
+      
+
         .input_num {
             position: relative;
         }