代码示例：@media only screen and (min-width: 320px){
html {
font-size: 8px !important;
}
.mulu-zi{
position: absolute;
top: 18px !important;
left: 18%;
color: #000000;
}
}
@media only screen and (min-width: 375px){
html {
font-size: 10px !important;
}
.mulu-zi{
position: absolute;
top: 12px !important;
left: 18%;
color: #000000;
}
}
@media only screen and (min-width: 414px){
html {
font-size: 11px !important;
}
.mulu-zi{
position: absolute;
top: 8px !important;
left: 18%;
color: #000000;
}
}
css中响应式布局中样式的代码书写方法
原文：http://www.cnblogs.com/zhangzihao/p/6266112.html
