css - 是否可以在媒体查询中嵌套媒体查询？

Question

这可能吗？对我来说这似乎是一个巧妙的解决方案，但我不确定它是否有效。

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

    /* Code for both portrait and landscape */

    @media (orientation:portrait) {

        /* Code for just portrait */

    }

    @media (orientation:landscape) {

        /* Code for just landscape */

    }

}

Answer 1

您应该能够 nest @media rules this way in CSS3 ，但大多数浏览器尚不支持它。参见 this answer了解详情。

您必须完全扩展并重复顶级媒体查询以获得内部规则才能跨浏览器工作(我想 SCSS 处理器会生成类似的东西):

@media only screen 
and (min-device-width: 320px) 
and (max-device-width: 480px) {
    /* Code for both portrait and landscape */
}

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

    /* Code for just portrait */

}

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

    /* Code for just landscape */

}