bootstrap媒体查询的屏幕设置(一)

.container{padding:0 15px; margin:0 auto;}
 2 .container:before{
 3     content: '';
 4     display: table;/*防止第一个子元素margin-top越界*/
 5     }
 6 .container:after{
 7     content:"";
 8     display:table;/*防止最后個子元素margin-bottom越界*/
 9     clear:both;/*清楚子元素浮动的影响*/
10 }
11
12 /*超大PC屏幕下的专用样式*/
13 @media screen and (min-width:1200px) {
14     .container{ width:1170px;}
15     .my-img{width:25%}
16 }
17 /*中等PC屏幕下的专用样式*/
18 @media screen and (min-width:992px) and (max-width: 1199px) {
19     .container{width:970px;}
20     .my-img{width:25%}
21 }
22 /*PAD屏幕下的专用样式*/
23 @media screen and (min-width: 768px) and (max-width:991px ){
24     .container{width:750px;}
25     .my-img{width:50%}
26 }
27 /*PHONE屏幕下的专用样式*/
28 @media screen and (min-width:767px) {
29     .container{ width:100%;}
30     .my-img{  width:100%;}
31 }

bootstrap媒体查询的屏幕设置(二)

body {
    background-color: white;
}
@media screen and (max-width: 960px){
    body {
    background-color: red;
}
}
@media screen and (max-width: 768px){
    body {
    background-color: yellow;
}
}
@media screen and (max-width: 550px){
    body {
    background-color: green;
}
}
@media screen and (max-width: 320px){
    body {
    background-color: blue;
}
}
01-23 04:45