作用:窗口大小决定css样式
/*手机*/
@media (max-width: 768px)
{
.media1{
width:400px;
}
}
/*平板*/
@media (min-width: 768px) and (max-width: 979px)
{
.media1{
width:400px;
}
}
/*PC*/
@media (min-width: 979px)
{
.media1{
width:400px;
}
}
<style>
/*手机*/
@media screen and (max-width:600px){
.box_2 {
padding-top: 45px;
}
}
/*平板*/
@media screen and (min-width:600px) and (max-width:960px){
.box_2 {
padding-top: 45px;
}
}
/*PC*/
@media screen and (min-width:960px){
.box_2 {
padding-top: 45px;
}
}
</style>