<html><head><style type="text/css">p {white-space: pre-wrap;}</style></head><body><p>This paragraph has a great many s p a c e s withits textual content, but their preservation will not preventline wrapping or line breaking.</p><p>注释：当 white-space 属性设置为 pre-wrap 时，浏览器不仅会保留空白符并保留换行符，还允许自动换行。</p></body></html>