blogger post comment link bigger

          <b:if cond='data:post.allowComments'>
            <h4 id='comment-post-message'><a expr:href='data:post.addCommentUrl' expr:onclick='data:post.addCommentOnclick'><span id='comment-post-message-text'><data:postCommentMsg/></span></a></h4>
          </b:if>