min-device-width和min-width
@media screen and (min-device-width: 200px) and (max-device-width: 300px){
#div0{
background: blue;
}
}
@media screen and (min-width: 200px) and (max-width: 300px){
#div0{
background: blue;
}
}为什么我用第一个不行,第二个不要device就可以了?