你即將離開本站

並前往https://www.reddit.com/r/css/comments/2ss6of/css_noobhelp_cant_get_header_to_reach_top_of_page/

CSS Noob...Help? Can't get header to reach top of page...

HTML does something called "margin collapsing". Imagine that each element's margin is a "safe zone" around it where other elements will not intrude.

確定！ 回上一頁

查詢 「HTML header CSS」的人也找了：

  1. CSS /head
    2.
  2. HTML header
    3.
  3. CSS header 教學
    4.
  4. html header設計
    5.
  5. 網頁header
    6.
  6. css header置頂
    7.
  7. HTML header 設計
    8.
  8. CSS
    9.