a few more mobile CSS tweaks

app/assets/stylesheets/mobile/topic-list.scss

@@ -44,8 +44,7 @@
   width: 100%;
   border-collapse: separate;
   border-spacing: 0;
-  border-top: 1px solid scale-color($primary, $lightness: 90%);;
-  border-bottom: 1px solid scale-color($primary, $lightness: 90%);;
+  border-top: 1px solid scale-color($primary, $lightness: 90%);
 
   > tbody > tr {
     background-color: $secondary;
@@ -146,14 +145,17 @@
     }
   }
 
+  .num.posts {
+    font-weight: bold;
+  }
+
   .num {
     text-align: center;
     a:not(.badge-posts) {
       color: inherit;
     }
+  }
 
-  .num.posts {
-    font-weight: bold;
   }
 
   }

app/assets/stylesheets/mobile/topic-post.scss

@@ -211,7 +211,7 @@ a.star {
   }
 
   .domain {
-    color: scale-color($primary, $lightness: 90%);
+    color: scale-color($primary, $lightness: 75%);
   }
 
   .topic-links {
@@ -251,6 +251,7 @@ a.star {
 /* this is to force the drop-down notification state description para below the button */
 #topic-footer-buttons p {
   clear: both;
+  margin: 0;
 }
 
 #suggested-topics {

app/assets/stylesheets/mobile/topic.scss

@@ -38,10 +38,13 @@
 .private-message-glyph { color: scale-color($primary, $lightness: 75%); }
 .private_message #topic-title .private-message-glyph { display: inline; }
 
-.notification-options {
+
+/* both blocks that appear under the standard post control buttons */
+.notification-options, .pinned-options {
   clear: both;
   float: left;
   margin-top: 0px;
+  padding-top: 1px;
 }
 
 #topic-closing-info {