Blog 换了个 D5 Themes, 发现 <pre> <code> 里面的代码超出容器没自动换行, 就给 CSS 加了个自动换行的 white-space 属性.
CSS 代码示例:
pre {
	white-space: pre;           /* CSS 2.0 */
	white-space: pre-wrap;      /* CSS 2.1 */
	white-space: pre-line;      /* CSS 3.0 */
	white-space: -pre-wrap;     /* Opera 4-6 */
	white-space: -o-pre-wrap;   /* Opera 7 */
	white-space: -moz-pre-wrap; /* Mozilla */
	white-space: -hp-pre-wrap;  /* HP Printers */
	word-wrap: break-word;      /* IE 5+, 文本行的任意字内断开 */
	}
加上 white-space 属性后实现自动换行.

white-space 的属性值
-  normal – Default value for the white-space property. Sequences of whitespace are collapsed to a single whitespace. <pre> content will wrap at whitespaces according to the width of the element.
 white-space 属性的默认值. 连续的空格做一个空格处理.
- nowrap – Sequences of whitespace are collapsed to a single whitespace. <pre> content will wrap to the next line ONLY at explicit <br /> elements.
 连续空格作为一个空格处理, 在一行上显示所有文本, 知道文本结束或者遇到 br 元素.
- pre – All whitespace is preserved. <pre> content will wrap at implicit line breaks. This is the default behavior of the <pre> element.
 用等宽字体显示预先格式化的文本。不合并字间的空白距离和进行两端对齐
-  pre-line – Sequences of whitespace are collapsed to a single whitespace. <pre> content will wrap at whitespaces and line breaks according to the width of the element.
 连续空格作为一个空格处理, 根据元素的宽度来处理换行
-  pre-wrap – All whitespace is preserved. <pre> content will wrap at whitespaces and line breaks according to the width of the element.
 不合并字间的空白, 根据元素的宽度来处理换行
- inherit – Value of white-space inherited from parent element. 集成自父元素
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