最大宽度 | @viewport.max-width (Device Adaptation) - CSS 中文开发手册css
max-widthCSS描述符指定经过定义的文档的视口的最大宽度@viewportat-rule。html
默认状况下,在考虑最大宽度约束的状况下,宽度将尽量接近初始视图。浏览器
Related at-ruleide |
@viewportorm |
---|---|
初始值htm |
autoip |
Percentagesci |
refer to the width of the initial viewport开发 |
适用媒体文档 |
visual, continuous |
计算值 |
if specified as a length, the corresponding absolute length; if specified as a percentage, the specified value; otherwise, auto |
正规顺序 |
the unique non-ambiguous order defined by the formal grammar |
/* Keyword value */ max-width: auto; max-width: none; /* <length> values */ max-width: 600px; max-width: 80em; max-width: 15cm; /* <percentage> value */ max-width: 75%;
auto使用的值是从其余CSS描述符的值中计算出来的。无使用的值是从其余CSS描述符的值中计算出来的。<length>非负的绝对或相对长度。<percentage>相对于初始视口宽度的百分比值,对于水平长度,缩放系数为1.0。必须是非负的。
<viewport-length>where <viewport-length> = auto | <length-percentage> where <length-percentage> = <length> | <percentage>
Specification |
Status |
Comment |
---|---|---|
CSS Device AdaptationThe definition of '"max-width" descriptor' in that specification. |
Working Draft |
Initial definition |
Feature |
Chrome |
Firefox (Gecko) |
Internet Explorer |
Opera |
Safari |
---|---|---|---|---|---|
Basic support |
29 (behind a flag) |
No support |
10 -ms |
11.10 Removed in 15 Reintroduced behind a flag in 16 |
No support |
Feature |
Android |
Chrome for Android |
Firefox Mobile (Gecko) |
IE Mobile |
Opera Mobile |
Safari Mobile |
---|---|---|---|---|---|---|
Basic support |
4.4 |
29 |
No support |
10-ms |
11.10 Removed in 15 Reintroduced behind a flag in 16 |
No support |