更新登录背景图

silence-admin/src/main/resources/static/css/login.min.css

@@ -4,7 +4,7 @@ html {
 
 body.signin {
     height: auto;
-    background: url(../img/login.png) no-repeat center fixed;
+    background: url(../img/background-login.jpg) no-repeat center fixed;
     -webkit-background-size: cover;
     -moz-background-size: cover;
     -o-background-size: cover;