2024年7月26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, or constrained to fit the available space.

The background-size property specifies the size of the background images. There are four different syntaxes you can use with this property: the keyword syntax ("auto", "cover" and "contain"), the one-value syntax (sets the width of the image (height becomes "auto"), the two-value syntax (first value: width of the image, second value: height ...

2014年7月9日 · When i set the background-size property from an image of a div to background-size: cover; or background-size: 100%;, the both look the same. What is the difference? When should i use cover and when 100%? cover = Scale the background image to be as large as possible so that the background area is completely covered by the background image.

2011年6月12日 · Values have the following meanings: Scale the image, while preserving its intrinsic aspect ratio (if any), to the largest size such that both its width and its height can fit inside the background positioning area.

2012年4月23日 · I'm creating an "image generator" where users can upload an image and add text and/or draw on it. The outputted image is a fixed size (698x450). On the client side, when the user uploads their image it is set as the background of a div that's 698x450 with background-size:cover. This makes it fill the area nicely.

2015年2月17日 · The background-size property in CSS is one of the most useful — and most complex — of the background properties. There are many variations and different syntaxes you can use for this property, all of which have different use cases. Here’s a basic example: html { background: url(greatimage.jpg); background-size: 300px 100px; }

The background-size property is used to define the size of the background image. The background-size property is one of the CSS3 properties. This property has five values: auto, length, percentages, cover, contain. Auto sets the background image in …

2024年1月1日 · The background-size CSS property is used to control the size of a background image in relation to its containing element. It allows web developers to specify how an image should be scaled, whether it should cover the entire element, be contained within it, or take up a specific percentage of the element's dimensions.

Scale the image, while preserving its intrinsic aspect ratio (if any), to the largest size such that both its width and its height can fit inside the background positioning area. Sets this property to its default value. If specified, the associated element takes the computed value of its parent element background-size property.

2023年5月4日 · The background-size CSS property is used to specify the size of the background picture. The image may be positioned to the left of its native size, stretched, or constrained to fit in the available space.