或者 background: red url(./images/wx1/jpg) no-repeat center center / cover; 两种写法的效果是一样的。 例子:background: #ff0000 url(/i/eg_bg_03.gif) no-repeat fixed center / cover; 这些参数从左到右依次是: background-color background-image background-repeat background-attachment backgrou...
background-image: -ms-linear-gradient(top, #fff, #dededc); background-image: -moz-linear-gradient(top, #fff, #dededc); background-image: -webkit-gradient(linear, left top, left bottom, from(#fff), to(#dededc)); background-image: -webkit-linear-gradient(top, #fff, #dededc); bac...
url('../static/images/circus.png');background-repeat:no-repeat;background-position:center;background-color:red;}.c-right-bottom{position:absolute;right:0;bottom:0;width:100px;height:70px;border:2px solid green;background-image:inherit;background-repeat:no-repeat;background-position...
url('../static/images/circus.png');background-repeat:no-repeat;background-position:center;background-color:red;}.c-right-bottom{position:absolute;right:0;bottom:0;width:100px;height:70px;border:2pxsolidgreen;background-image:inherit;background-repeat:no-repeat;background-position:...
.container {display: flex;align-items: center;justify-content: center;} 12. 自定义选择的突出显示颜色 自定义在网页上选择文本时的突出显示颜色。 ::selection {background-color: #ffcc00;color: #333;} 13. 占位符文本样式 设置输入字段内占位符文本...
display: block;align-content: center;} 1. 2. 3. 4. 再也不用纠结是选 flexbox 还是 grid 了。 2. 更智能的 CSS 变量:@property CSS 变量非常灵活,但也存在缺陷,比如缺乏类型约束和默认值支持。现在,@property 规则让你可以定义具有特定类型、继承规则和初始值的自定义属性。
><title>Document</title><style>div{height:100%;background-color:gray;border:1pxsolidred;}*{margin:0;padding:0;box-sizing:border-box;}/* 1.请问body的高度是多少 */文字高度/* 2.如果希望body 高度跟视口高度一样该怎么做 */body,html{height:100%;}</style></head><body><div>22222</div>...
TestNotInList TestPass TestPlan TestPlanProperty TestPlans TestProperty TestResult TestResultDetails TestRun TestRunner TestRunProperty TestSettings TestSuite TestSuiteRequirement TestVariable TextAndImage Textarea TextBlock TextBox TextCenter TextElement TextFile TextJustify TextLeft TextLineHeight TextRight...
Let’s give that div boxAnimation a bit of style so it looks like a box: XML Copy <style> ... .box { border: 1px solid black; background-color: red; width: 25px; height: 25px; position: relative; } ... </style> With that in place, I’ll define ...
3 列 CSS如下：所有元素左浮动，容器宽度设为100%，使他们占满页面的宽度。背景色从内容 div 移除并加至容器上。#container3 { float:left; width:100%; background:green; } #container2 { float:left; width:100%; background:yellow; } #container1 { float:left; width:100%; background...