"%":是继承父级元素的距离;
"无单位":是子元素计算各自的行距离
eg:
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<! DOCTYPE html> < html lang="en"> < head > < meta charset="UTF-8"> < title >Document</ title > < style > body{ font-size:14px; line-height:150%; background: black; } p{ font-size:26px; background: gray; color: white; } </ style > </ head > < body > < p >你好!</ p > </ body > </ html > |
效果如图:
![](https://images2015.cnblogs.com/blog/729128/201511/729128-20151110141014681-499793116.png)
1、当line-height:XX%时:
body{font-size:14px;line-height:150%;}
p{font-size:26px;}
结果就是:
body{line-height:21px;}//14*150%=21
p{line-heigt:21px;}//继承父元素
eg:
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<! DOCTYPE html> < html lang="en"> < head > < meta charset="UTF-8"> < title >Document</ title > < style > body{ font-size:14px; line-height:1.5; background: black; } p{ font-size:26px; background: gray; color: white; } </ style > </ head > < body > < p >你好!</ p > </ body > </ html > |
效果如图:
![](https://images2015.cnblogs.com/blog/729128/201511/729128-20151110141217556-1093186265.png)
2、当line-height:X.X时:
body{font-size:14px;line-height:1.5;}
p{font-size:26px;}
结果就是:
body{line-height:21px;}//14*1.5=21
p{line-height:39px;}//26*1.5=39