Remove duplicate styles.

css/_close.scss

 html, body {
-    margin:0px;
     width: 100%;
     height:100%;
     color: $defaultColor;
     background: $defaultBackground;
-    font-size: 12px;
-    font-weight: 400;
-    overflow: hidden;
     text-align: center;
 }
 
 .closeMessage {
     font-size: 36px;
     margin-top: 20%;
-}
+}