[CSS3] 말줄임

- 한줄
text-overflow:ellipsis; white-space:nowrap; word-wrap:normal

- 두줄
overflow: hidden;text-overflow: ellipsis;display: -webkit-box;-webkit-line-clamp: 3;-webkit-box-orient: vertical;word-wrap:break-word; line-height: 1.2em; height: 3.6em;