Made borders rectangle in the MD theme.

boards/static/css/md/base_page.css

@@ -47,7 +47,7 b' html {'
     background: #333;
     margin: 5px;
     padding: 10px;
-    border-radius: 5px;
+    border: solid 1px #888;
     clear: left;
     word-wrap: break-word;
 }
@@ -65,7 +65,7 b' html {'
     background: #444;
     margin: 5px;
     padding: 10px;
-    border-radius: 5px;
+    border: solid 1px #888;
     color: #eee;
 }
 
@@ -102,7 +102,7 b' p {'
 .post-form-w {
     display: table;
     background: #333344;
-    border-radius: 5px;
+    border: solid 1px #888;
     color: #fff;
     padding: 10px;
     margin: 5px
@@ -278,4 +278,4 b' li {'
     font-size: 0.9em;
     color: #ccc;
     margin-top: 1em;
-}
  No newline at end of file
+}