让连续的英文数字字符换行显示
word-break: break-all;
让单行文字超出的时候使用点点点表示
white-space: nowrap; overflow: hidden; text-overflow: ellipsis;（移动开发浏览器支持良好）
WebKit可以让多行文字点点点（利用Flexbox）：
overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical;
淡出方式实现：
原理就是设定高度，然后最后那里用淡出做覆盖。例如line-height设为1.2em，然后需要三行文字，那么就把高度设为3.6em，然后把超出的overflow:hidden。在最后添加添加...或者用伪元素（before）半透明遮罩，因为不知道到底有几行字，所以方法就给最后一行整行添加半透明遮罩。
opera自己搞了一套：
.last-line {
height: 3.6em; /* exactly three lines */
text-overflow: -o-ellipsis-lastline;
}
在自适应的表格中，会撑大表格宽度，因为单元格的流动性，使得文字根本就不存在溢出这种说法，这个时候给table使用 table-layout: fixed 作用在于，让表格布局固定，也就是表格的宽度不是跟随单元格内容多少自动计算尺寸
使用表格相关display属性帮助构建web页面，总会遇到类似的连续英文字符不换行，或者单行文字溢出没有效果的。此时，可以用以下方法解决
display:table; 100%; table-layout:fixed;
使用line-clamp截断多行文字，出现...
<p><a target="_top" href="http://codepen.io/romanrudenko/pen/ymHFh">Previous Step</a> 09.readmore</p>
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<p>Call me Ishmael. Some years ago – never mind how long precisely – having little or no money in my purse, and nothing particular to interest me on shore, I thought I would sail about a little and see the watery part of the world. It is a way I have of driving off the spleen, and regulating the circulation. Whenever I find myself growing grim about the mouth; whenever it is a damp, drizzly November in my soul; whenever I find myself involuntarily pausing before coffin warehouses, and bringing up the rear of every funeral I meet; and especially whenever my hypos get such an upper hand of me, that it requires a strong moral principle to prevent me from deliberately stepping into the street, and methodically knocking people's hats off – then, I account it high time to get to sea as soon as I can. <i></i></p>
</div><a href="http://www.gutenberg.org/catalog/world/readfile?fk_files=2579906&pageno=11">Read More</a></div>
<div class="ellipsis"><div>
<p>Call me Ishmael. Some years ago – never mind how long precisely – having little or no money in my purse, and nothing particular to interest me on shore, I thought I would sail about a little and see the watery part of the world. It is a way I have of driving off the spleen, and regulating the circulation. Whenever I find myself growing grim about the mouth; whenever it is a damp, drizzly November in my soul; whenever I find myself involuntarily pausing before coffin warehouses, and bringing up the rear of every funeral I meet; and especially whenever my hypos get such an upper hand of me, that it requires a strong moral principle to prevent me from deliberately stepping into the street, and methodically knocking people's hats off – then, I account it high time to get to sea as soon as I can. <i></i></p>
</div><a href="http://www.gutenberg.org/catalog/world/readfile?fk_files=2579906&pageno=11">Read More</a></div>
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