background
background-color
背景颜色
值:颜色名/十六进制#rrggbb(就可以缩写#rgb)/rgb函数/tansparent/inherit
background-image
背景图片
值:none/inherit/url
(图片路径)
background-repeat
背景图片是否重复或者重复方式
值:repeat/repeat-x/repeat-y/no-repeat/inherit
如果存在background-image那么就可能存在background-repeat
如果不再在background-image那么一定就不存在background-repeat
background-attachment
背景图片是否随内容的移动而移动
值:scroll/fixed/inherit
background-position
背景图片水平垂直位置
值:位置参数/长度/百分比
background就是五种属性的组合 值:以上5种属性值的集合
ul>li*12
:自动生成在ul层级下生成12个li标签
background-image
详细讲解<ul style="background-color: tan; width: 500px;">
<li style="width: 700px; background-color: red;">1<li>
<!-- 黑和白 -->
<li style="background-color: #000000;">2<li>
<li style="background-color: #ffffff;">2<li>
<!-- 缩写 -->
<li style="background-color: #ff0000;">2<li>
<li style="background-color: #f00;">2<li>
<!-- a表示透明度alpha -->
<li style="background-color: rgb(255, 0, 0);">3<li>
<li style="background-color: rgba(255, 0, 0, 0.5);">3<li>
<!-- opacity表示标签透明度 -->
<li style="background-color: rgb(255, 0, 0); opacity: 0.5;">3<li>
<!-- transparent 透明色 表示标签默认的背景色 -->
<li>4<li>
<!-- inherit 继承 表示继承父级元素的背景色 -->
<li style="backgound-color: inherit; width: 800px;">4<li>
</ul>
background-image
和background-repeat
background-image
背景图片
值:none/inherit/url
(图片路径)
background-repeat
背景图片是否重复或者重复方式
值:repeat/repeat-x/repeat-y/no-repeat/inherit
<!-- 背景图填充效果 --->
<div style="width: 800px; height: 800px; background-image: url(img/bg_big.png);"></div>
<div style="width: 200px; height: 200px; background-image: url(img/bg_small.png); background-repeat: repeat;"></div>
<div style="width: 200px; height: 200px; background-image: url(img/bg_small.png); background-repeat: no-repeat;"></div>
<div style="width: 200px; height: 200px; background-image: url(img/bg_small.png); background-repeat: repeat-x;"></div>
<div style="width: 200px; height: 200px; background-image: url(img/bg_small.png); background-repeat: repeat-y;"></div>
<div style="width: 200px; height: 200px; background-image: url(img/bg_big.png);"></div>
<div style="width: 200px; height: 200px; background-image: url(img/bg_big.png); background-size: 100%;"></div>
<div style="width: 200px; height: 200px; background-image: url(img/bg_small.png); background-size: 100%;"></div>
background-attachment
背景图片是否随内容的移动而移动
值:scroll/fixed/inherit
<body style="background-image: url(img/bg_big.png); background-repeat: no-repeat">
<!-- scroll 默认值 可以滚动 --->
<!-- fixed 固定不动 --->
<!-- inherit 继承父级元素 --->
<div style="width: 200px; height: 2000px; background-color: tan; background-attachment: fixed;"></div>
</body>
background-position
背景图片水平或垂直方向的位置
值:参数/长度/百分比
<!-- 位置参数 background-position: y x; y center/top/bottom x center/left/right --->
<div style="width: 200px; height: 200px; background-image: url(img/bg_small.png); background-repeat: no-repeat; background-position: center left;"></div>
<!-- border 边框 1px边框宽度 solid实线 black颜色 详见边框详解 --->
<!-- 一个值10px x轴偏移10px y轴居中 --->
<!-- x轴向右偏移10px --->
<!-- y轴向下偏移5px --->
<div style="border: 1px solid black; height: 200px; background-image: url(img/bg_small.png); background-repeat: no-repeat; background-position: 10px 5px;"></div>
<!-- 一个值50% 上下左右偏移到50% --->
<!-- x轴偏移到50%--->
<!-- y轴偏移到10%--->
<div style="border: 1px solid black; height: 200px; background-image: url(img/bg_small.png); background-repeat: no-repeat; background-position: 50% 10%;"></div>
轮播图箭头按钮,是一整张图。悬停,显示其他图片。
<!-- 显示左箭头--->
<div style="width: 200px; height: 200px; background-image: url(img/left_right_arrow.png); background-repeat: no-repeat; background-position-x:;"></div>
<!-- 显示右箭头--->
<div style="width: 44px; height: 60px; background-image: url(img/left_right_arrow.png); background-repeat: no-repeat; background-position-x: -88px;"></div>
轮播图箭头图例:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title></title>
<!-- 掘金色#1e80ff #e8f3ff -->
<div style="width: 100px; height: 100px; background: #1e80ff;">1</div>
<div style="border: 1px solid black; width: 100px; height: 100px; background: url(https://lf3-cdn-tos.bytescm.com/obj/static/xitu_juejin_web/dcec27cc6ece0eb5bb217e62e6bec104.svg);">2</div>
<div style="border: 1px solid black; width: 100px; height: 100px; background: url(https://lf3-cdn-tos.bytescm.com/obj/static/xitu_juejin_web/dcec27cc6ece0eb5bb217e62e6bec104.svg) no-repeat;">3</div>
<div style="border: 1px solid black; width: 100px; height: 100px; background: #e8f3ff url(https://lf3-cdn-tos.bytescm.com/obj/static/xitu_juejin_web/dcec27cc6ece0eb5bb217e62e6bec104.svg) no-repeat center center;">4</div>
</head>
<body>
</body>
</html>
css
规范中定义了147
种颜色名,17
种标准色,130种其他色。
tan/teal/thistle/tomato/turquoise/ darkmagenta/darkslategray/lightcoral/lightcyan/lightslmon/lightseagreen/ red/darkgoldenrod/darkred/indianred/mediumvioletred/orangered/palevioletred/ gray/darkgray/darkslategray/dimgray/lightslategray/slategray/ black/blanchedalmond/blue/blueviolet/burlywood/aliceblue/cadetblue/darkblue/darkslateblue/ aliceblue/antiquewhite/aqua/aquamarine/azure/beige/bisque/black/blanchedalmond/blue/ solid/saddlebrown/salmon/sandybrown/snow/crimson/darksalmon/gainboro/lightsalmon/mistyrose/rosybrown
作者:林泉
链接:https://juejin.cn/post/7009627877347950623
来源:掘金
著作权归作者所有。商业转载请联系作者获得授权,非商业转载请注明出处。