.dont-break-out {

/* These are technically the same, but use both */
overflow-wrap: break-word;
word-wrap: break-word;

-ms-word-break: break-all;
/* This is the dangerous one in WebKit, as it breaks things wherever */
word-break: break-all;
/* Instead use this non-standard one: */
word-break: break-word;

/* Adds a hyphen where the word breaks, if supported (No Blink) */
-ms-hyphens: auto;
-moz-hyphens: auto;
-webkit-hyphens: auto;
hyphens: auto;

}


관련문서 : http://tobyyun.tumblr.com/post/35200812018/url-%EC%A4%84%EB%B0%94%EA%BF%88%EC%9D%84-%EC%9C%84%ED%95%9C-css%EC%86%8D%EC%84%B1