Fix missing settings button (#3175)

* With changes made on https://github.com/bitwarden/clients/pull/2662 the button disappeared

* Remove redundant and no longer used css for env settings button on desktop

apps/browser/src/popup/scss/pages.scss

@@ -56,7 +56,7 @@ app-home {
     margin-top: 10px;
   }
 
-  a.settings-icon {
+  button.settings-icon {
     position: absolute;
     top: 10px;
     left: 10px;

apps/desktop/src/scss/environment.scss

@@ -25,21 +25,6 @@
     }
   }
 
-  #login-page {
-    .content {
-      a.settings-icon {
-        position: absolute;
-        left: unset;
-        right: 20px;
-
-        span {
-          margin-right: 8px;
-          float: left;
-        }
-      }
-    }
-  }
-
   .vault .header-search {
     -webkit-app-region: drag;
 

apps/desktop/src/scss/pages.scss

@@ -111,33 +111,6 @@
         }
       }
     }
-
-    a.settings-icon {
-      position: absolute;
-      top: 10px;
-      left: 10px;
-
-      @include themify($themes) {
-        color: themed("mutedColor");
-      }
-
-      span {
-        visibility: hidden;
-      }
-
-      &:hover,
-      &:focus {
-        text-decoration: none;
-
-        @include themify($themes) {
-          color: themed("primaryColor");
-        }
-
-        span {
-          visibility: visible;
-        }
-      }
-    }
   }
 }