解决ie11下垂直不居中的问题

lyear_pages_login.html

@@ -21,6 +21,11 @@
     align-items: center !important;
     justify-content: center !important;
 }
+.lyear-login:after{
+    content:'';
+    min-height:inherit;
+    font-size:0;
+}
 .login-center {
     background: #fff;
     min-width: 29.25rem;