remove horizontal scroll on edge

customize.dist/main.css

@@ -494,6 +494,7 @@ html.cp,
   color: #555;
   font-family: Georgia,Cambria,serif;
   height: 100%;
+  overflow-x: hidden;
 }
 .cp {
   /* buttons */

customize.dist/src/less/cryptpad.less

@@ -15,6 +15,7 @@ html.cp, .cp body {
 
     font-family: Georgia,Cambria,serif;
     height: 100%;
+    overflow-x: hidden;
 }
 
 .cp {