How do I indicate long text into a smaller fixed column with CSS? cut line by css

[php]
.box {
-o-text-overflow: ellipsis; /* Opera */
text-overflow: ellipsis; /* IE, Safari (WebKit) */
overflow:hidden; /* don’t show excess chars */
white-space:nowrap; /* force single line */
width: 300px; /* fixed width */
}
[/php]