本文共 2550 字，大约阅读时间需要 8 分钟。

/* Desktops and laptops ----------- */    @media only screen    and (min-width : 1224px) {    /* Styles */    }         /* Large screens ----------- */    @media only screen    and (min-width : 1824px) {    /* Styles */    }        /* old Smartphones (portrait and landscape) ----------- */    @media only screen    and (min-device-width : 320px)    and (max-device-width : 480px) {    /* Styles */    }         /* old Smartphones (landscape) ----------- */    @media only screen    and (min-width : 321px) {    /* Styles */    }         /* old Smartphones (portrait) ----------- */    @media only screen    and (max-width : 320px) {    /* Styles */    }        /* 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 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 */    }        /* Android Tablet (portrait and landscape) ----------- */    @media only screen    and (min-device-width : 800px)    and (max-device-width : 1280px) {    /* Styles */    }         /* Android Tablet (landscape) ----------- */    @media only screen    and (min-device-width : 800px)    and (max-device-width : 1280px)    and (orientation : landscape) {    /* Styles */    }         /* Android Tablet (portrait) ----------- */    @media only screen    and (min-device-width : 800px)    and (max-device-width : 1280px)    and (orientation : portrait) {    /* Styles */    }         /* Desire + Galaxy S2 (portrait and landscape) ----------- */    @media only screen    and (min-device-width : 480px)    and (max-device-width : 800px) {    /* Styles */    }         /* Desire + Galaxy S2 (landscape) ----------- */    @media only screen    and (min-device-width : 480px)    and (max-device-width : 800px)    and (orientation : landscape) {    /* Styles */    }         /* Desire + Galaxy S2 (portrait) ----------- */    @media only screen    and (min-device-width : 480px)    and (max-device-width : 800px)    and (orientation : portrait) {    /* Styles */    }

转载自：