fix #493. set font-size for markdown blockquote
fix #493. set font-size for markdown blockquote

brainagenet/yobi,doortts/fork-yobi,doortts/forked-for-history,naver/yobi,bloodybear/yona,violetag/demo,Limseunghwan/oss,oolso/yobi,yona-projects/yona,yona-projects/yona,ChangsungKim/TestRepository01,doortts/fork-yobi,ahb0327/yobi,bloodybear/yona,brainagenet/yobi,oolso/yobi,oolso/yobi,ChangsungKim/TestRepository01,doortts/fork-yobi,brainagenet/yobi,doortts/forked-for-history,ihoneymon/yobi,ihoneymon/yobi,doortts/fork-yobi,yona-projects/yona,ahb0327/yobi,bloodybear/yona,doortts/forked-for-history,violetag/demo,bloodybear/yona,Limseunghwan/oss,yona-projects/yona,ahb0327/yobi,naver/yobi,naver/yobi,ihoneymon/yobi,Limseunghwan/oss