CSS Media Queries? An ALMOST 100% Complete Guide to ...
TheorientationCSSmediafeaturecanbeusedtotesttheorientationoftheviewport(orthepagebox,forpagedmedia).,MediaqueriesallowyoutoapplyCSSstylesdependingonadevice'smediatype(suchasprintvs.screen)orotherfeaturesorcharacteristics.,在css插入css時加條件。@i...。參考影片的文章的如下: