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Responsive Web Design 響應式網頁設計學習手冊
book

Responsive Web Design 響應式網頁設計學習手冊

by Clarissa Peterson
December 2014
Intermediate to advanced
416 pages
5h 33m
Chinese
GoTop Information, Inc.
Content preview from Responsive Web Design 響應式網頁設計學習手冊
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響應式網頁設計學習手冊
4-10 邊框樣式的選項
要在一個宣告裡指定邊框,你可以依任何順序包含那些值。下列程
式碼將
<div>
的邊框設為 1 個像素,具有實線(solid)樣式,並且
是紅色(red)的︰
div { border: 1px solid red; }
如果你一次只要設定一個,也可以分別針對三個特性中的每一個作
設定︰
div { border-width: 2px; }
div { border-style: dotted; }
div { border-color: green; }
你也能夠分別設定元素的每一邊︰
div { border-left-width: 2em; }
div { border-right-style: inset; }
div { border-top-color: blue; }
三個特性中的每一個都能夠針對頂端、底部、左側及右側作
設定。
箱型尺寸
既然已經學到如何量測箱型的所有零件,你必須瞭解,不幸地,判
斷網頁上的箱型尺寸還是有點困難。內邊距、外邊距和邊框算是元
素寬度和高度的一部分嗎?視情況而定。
實際上,有兩種獨立的方法告訴瀏覽器如何量測一切。CSS3 新增的
box-sizing
特性允許你在二種方法之間作選擇,分別是
border-box
content-box
採用
border-box
時,一旦設定區塊元素的寬度,任何你所增加的內
邊距與方框都會在該寬度內。相反地,採用預設的
content-box
時,
任何內邊距與方框都會在該寬度外。 ...
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Publisher Resources

ISBN: 9789863473305