& Nbsp; When outputting Chinese characters on the page, if the area width is insufficient, the line breaks automatically. However, English letters are not allowed. that is to say, the output is similar to & quot; aaaaaaaaaaaa & quot; A string of characters. the page regards this as a word and cannot be disconnected. if it is output in & lt; divid & quot; test & quot; & gt; & lt; div & gt, the area is only 3 characters in width, so the page will be misplaced. If you change to & when the page outputs Chinese characters, if the area width is insufficient, the line breaks automatically. However, English letters are not allowed. that is to say, you output a string of characters similar to "aaaaaaaaaaaa, the page considers this as a word and cannot be disconnected.
And the area is only 3 characters in width, the page will be misplaced. If you change to "aaa", you can use a line break because the page regards them as four words.
To forcibly wrap a line, you only need to add word-wrap: break-word to the CSS design;/* forcibly wrap */.
# Test {
......;
......;
Word-wrap: break-word;/* Force line feed */
}