/*Keywordvalues*/background-size:cover;background-size:contain;/*One-valuesyntax*//*thewidthoftheimage
SVG背景的缩放 考虑到SVG图像的灵活性,将它们作为背景图像与background-image属性一起使用时需要记住很多事项,而且在使用background-size属性对其进行缩放时还需要记住更多内容
CSS .tiledBackground{background-image:url(https://mdn.mozillademos.org/files/8971/firefox_logo.png);background-size
background-clip,background-color,background-image,background-origin,background-position,background-repeat,background-size
background-color,background-clip,background-image,background-origin,background-position,background-repeat,background-size
background-origin background-position background-position-x background-position-y background-repeat background-size
background-attachment,background-clip,background-image,background-origin,background-position,background-repeat,background-size
webkit-text-stroke -webkit-text-stroke-color all backdrop-filter background background-color background-position background-size
Lineargradientwithtransparency
CSS使用(1)其内在尺寸来确定对象的具体尺寸;(2)由CSS属性定义的指定大小width,height或background-size;(3)其默认大小,由图像的属性类型决定: [表格] 具体对象的大小使用以下算法计算
:url('http://lorempixel.com/400/200/');background-position:centercenter;background-repeat:no-repeat;background-size
background-color,background-image,background-clip,background-origin,background-position,background-repeat,background-size
0,0,0,0.5),rgba(0,0,0,0.5)10px,rgba(255,255,255,0.5)10px,rgba(255,255,255,0.5)20px)topleftno-repeatyellow;background-size
relative;min-height:400px;}/*ImageControl*/#subject{width:300px;height:300px;background-repeat:no-repeat;background-size