Design polish

ui/src/style/components/template-variables-manager.scss

@@ -12,7 +12,7 @@ $tvmp-table-gutter: 8px;
 
 .template-variable-manager {
   max-width: $tvmp-panel-max-width;
-  margin: 0 $tvmp-gutter;
+  margin: 0 auto;
 }
 .template-variable-manager--header {
   height: $chronograf-page-header-height;
@@ -220,4 +220,4 @@ $tvmp-table-gutter: 8px;
   .confirm-buttons + .btn-edit {
     display: none;
   }
-}
+}

ui/src/style/pages/overlay-technology.scss

@@ -14,7 +14,8 @@ $overlay-z: 100;
   left: 0;
   right: 0;
   z-index: $overlay-z;
-  
+  padding: 0 30px;
+
   &:before {
     content: '';
     display: block;
@@ -124,4 +125,4 @@ $overlay-z: 100;
 }
 .overlay-technology .query-maker--tab-contents {
   margin-bottom: 8px;
-}
+}