[轉貼]CSS筆記-依視窗寬度自動隱藏

[轉貼]CSS筆記-依視窗寬度自動隱藏

@media only screen and (min-width:465px) {
.b2 { display: block; }
}
@media only screen and (min-width:560px) {
.b1 { display: block; }
}

來源:http://blog.darkthread.net/post-2014-02-24-css-auto-hide-under-low-width.aspx