improve markdown style

Author: Rokt33r

browser/styles/mixins/marked.styl

@@ -5,27 +5,28 @@ marked()
     margin 15px 0
   h1
     font-size 2em
-    margin 0 auto 0.67em
+    border-bottom solid 2px borderColor
+    margin 0.67 auto
   h2
     font-size 1.5em
-    margin 0 auto 0.83em
+    margin 0.83em auto
   h3
     font-size 1.17em
-    margin 0 auto 1em
+    margin 1em auto
   h4
     font-size 1em
-    margin 0 auto 1.33em
+    margin 1.33em auto
   h5
     font-size 0.83em
-    margin 0 auto 1.67em
+    margin 1.67em auto
   h6
     font-size 0.67em
     margin 2.33em auto
   h1, h2, h3, h4, h5, h6
-    font-weight 400
-    line-height 1.4em
+    font-weight 700
+    line-height 1.8em
   p
-    line-height 1.4em
+    line-height 1.8em
     margin-bottom 15px
   img
     max-width 100%