Backgroundimage100

background-size是對背景圖片設定其尺寸，所以必須要搭配background-image來使用，所以當你沒有設定background-image的時候是沒有作用的，此外background-color也無法 ...,2012年6月19日—Thiswillsetyourbackgroundimageto100%widthandallowtheheighttooverflow.Nowyoucanusemediaqueriestoswapoutthatimageinstead ...,2014年4月5日—HowdoImaketheheightofmybackgroundimage100%ofthescreenwhichtheuserisusingtoviewthewebpa...

參考資訊如下
Background-size- 金魚都能懂的CSS必學屬性

background-size 是對背景圖片設定其尺寸，所以必須要搭配background-image 來使用，所以當你沒有設定background-image 的時候是沒有作用的，此外background-color 也無法 ...

100% width background image with an 'auto' height

2012年6月19日 — This will set your background image to 100% width and allow the height to overflow. Now you can use media queries to swap out that image instead ...

CSS

2014年4月5日 — How do I make the height of my background image 100% of the screen which the user is using to view the webpage?

background-size

The size of the background image is set in percent of the parent element; 100% width and 100% height. background-size: 75% 50%:. Hello World. The size of the ...

background-size - CSS: Cascading Style Sheets

2023年7月17日 — The background-size CSS property sets the size of the element's background image. The image can be left to its natural size, stretched, ...

新增圖片時，該用HTML的img，還是CSS的background

2020年7月17日 — 如果想將背景圖片調整成完全佔滿container，記得要將background-size調整為100%，這樣背景圖片就會和HTML的<img>有一樣的樣式了! .background- ...

6 Ways to Stretch a Background Image with CSS

Another method to stretch a background image in CSS is by setting the width and height to 100%. Unlike the cover method, this method stretches the image to fill ...

Perfect Full Page Background Image

2010年11月20日 — Four techniques are explored on accomplishing a full page background image that conforms to our exceptions: no white space, scales as needed ...

Responsive Web Design Images

Background images can also respond to resizing and scaling. Here we will show three different methods: 1. If the background-size property is set to contain, ...

How to make background image 100% width

2009年2月10日 — Does anyone know how to make a background image scale to 100% of the browser width? See this example for a visual reference of what I'm asking.