RWD: different devices exhibit輛個 the same page

With the popularity o明兒f 3G, more and more peopl動兒e use the mobile Internet放醫. Mobile devices are 愛有more than desktops, the most comm冷聽on terminal to access the國中 Internet. So, 醫資web designers have to face a di街外lemma: how to子看 render the same page on differ筆做ent sized devices?
The phone's screen is relatively small,我好 usually 600 pi答能xels width or less; PC screen w嗎這idth of 1000 pixels or錯在 more generally in the (mai他數nstream width is 1366 × 768), and som報拿e reached 20 pixels. 東友The same content黃明 to different size on the scre都林en, show satisfactory re兒相sults, not an easy task.

Many solutions website is to provid議如e different 東坐pages for different devi什子ces, for exam那長ple, specializes in providing a m友可obile version,兵話 or iPhone / iP近線ad version. This of course en業多sures results, but too much troubl綠舞e, while maintaining seve長錯ral versions, and 化動if a site has multiple portal長場 (entrance), wil鐵能l greatly increase the complexity of 門音the architecture des高可ign.

Thus, it has long been contemplated, c山鐘an "design once, universally appl樂海icable," so that the same page 亮路automatically ada吧理pt to different s算關creen sizes, according to the width of 算友the screen automatically adjusts th個現e layout (layout紙匠)?