fix markdown style a little more

browser/styles/mixins/marked.styl

@@ -2,9 +2,9 @@ marked()
   hr
     border-top none
     border-bottom solid 1px borderColor
-    margin 20px 0
+    margin 15px 0
   h1, h2, h3, h4, h5, h6
-    margin 0 0 20px
+    margin 0 0 15px
     font-weight 600
   * + h1, * + h2, * + h3, * + h4, * + h5, * + h6
     margin-top 25px
@@ -32,7 +32,7 @@ marked()
     margin-top 15px
   p
     line-height 1.9em
-    margin 0 0 20px
+    margin 0 0 15px
   img
     max-width 100%
   strong
@@ -43,12 +43,12 @@ marked()
     text-decoration line-through
   blockquote
     border-left solid 4px brandBorderColor
-    margin 0 0 20px
+    margin 0 0 15px
     padding 0 25px
   ul
     list-style-type disc
     padding-left 35px
-    margin-bottom 20px
+    margin-bottom 15px
     li
       display list-item
       line-height 1.8em
@@ -61,7 +61,7 @@ marked()
   ol
     list-style-type decimal
     padding-left 35px
-    margin-bottom 20px
+    margin-bottom 15px
     li
       display list-item
       line-height 1.8em