update css for login page

pdaaphm-ui/src/views/login.vue

@@ -171,15 +171,17 @@ export default {
 }
 
 .login-form {
-  margin-top: 18%;
+  margin-top: 15%;
   border-radius: 6px;
   background: rgba(255,255,255, 0.2);
   width: 400px;
   padding: 25px 25px 5px 25px;
   .el-input {
     height: 30px;
+    background-color: rgba(255,255,255,0.6);
     input {
       height: 30px;
+      background-color: rgba(255,255,255,0.6);
     }
   }
   .input-icon {