Improved siglen visualization

Change-Id: Id372d76ec91e873a8c0a11e8c6fa54d9a5b6e427
diff --git a/dev/scss/main/kwic-new.scss b/dev/scss/main/kwic-new.scss
index de6bcf3..20820d2 100644
--- a/dev/scss/main/kwic-new.scss
+++ b/dev/scss/main/kwic-new.scss
@@ -33,15 +33,20 @@
       z-index: 5;
       overflow-y: visible;
       white-space: nowrap;
-      background-color: $light-green;
-      // border-top: 1px solid lighten($light-green, 10%);
+      background-color: $middle-grey;
       border: {
-        color: $dark-green;
+        color: $dark-grey;
         style: solid;
-        width: 1px 0;
+        width: 2px 1px 0 0;
+      }
+      &:empty {
+        border-width: 0 1px 0 0;
+      }
+      &.flip {
+        background-color: lighten($middle-grey, 10%);
       }
       color: $nearly-white;
-      font-size: 80%;
+      font-size: 75%;
       padding: 0 5pt;
     }
     &:first-of-type div.meta {