Remove highlight, Fix messages

sass/components/message.sass

@@ -30,14 +30,18 @@
   line-height: 1.25
   padding: 0.5em 0.75em
   position: relative
+  a,
   strong
     color: inherit
+  a
+    text-decoration: underline
   .delete
     flex-grow: 0
     flex-shrink: 0
     margin-left: 0.75em
   & + .message-body
-    border-radius: 0 0 $radius $radius
+    border-top-left-radius: 0
+    border-top-right-radius: 0
     border-top: none
 
 .message-body
@@ -45,8 +49,11 @@
   border-radius: $radius
   color: $text
   padding: 1em 1.25em
+  a,
   strong
     color: inherit
+  a
+    text-decoration: underline
   code,
   pre
     background: $white