概念:
device-pixel-ratio:定义输入设备屏幕的可视宽度与可见高度比率。

device-width:输入设备屏幕的可视宽度。

orientation:屏幕横竖屏定向。landscape 是横向,portrait 是纵向【ipad 相反】

/* iPhone 4 ----------- */

@media only screen and (-webkit-min-device-pixel-ratio : 1.5),
only screen and (min-device-pixel-ratio : 1.5) {

/* Styles */

}

/* iPads (portrait) ----------- */

@media only screen
and (min-device-width : 768px)
and (max-device-width : 1024px)
and (orientation : portrait) {

/* Styles */

}

/* Smartphones (portrait and landscape) ----------- */

@media only screen
and (min-device-width : 320px)
and (max-device-width : 480px) {

/* Styles */

}

/* Smartphones (landscape) ----------- */

@media only screen
and (min-width : 321px) {

/* Styles */

}

/* Smartphones (portrait) ----------- */

@media only screen
and (max-width : 320px) {

/* Styles */

}

/* iPads (portrait and landscape) ----------- */

@media only screen
and (min-device-width : 768px)
and (max-device-width : 1024px) {

/* Styles */

}

/* iPads (landscape) ----------- */

@media only screen
and (min-device-width : 768px)
and (max-device-width : 1024px)
and (orientation : landscape) {

/* Styles */

}

/* iPads (portrait) ----------- */

@media only screen
and (min-device-width : 768px)
and (max-device-width : 1024px)
and (orientation : portrait) {

/* Styles */

}

/* Desktops and laptops ----------- */

@media only screen
and (min-width : 1224px) {

/* Styles */

}

/* Large screens ----------- */

@media only screen
and (min-width : 1824px) {

/* Styles */

}

原文:http://www.frontopen.com/2728.html

最后更新于:
2022.08.26