[英]Background-size doesn't work
Here's my CSS: 这是我的CSS:
.banner-text-BG {
background: #00A7E1 url(images/sale_tag.png) left center no-repeat !important;
background-size: 20px 20px;
height: auto;
padding: 15px;
position: static;
width: auto;
-webkit-border-radius: 70px 10px 10px 70px;
-moz-border-radius: 70px 10px 10px 70px;
border-radius: 70px 10px 10px 70px;
padding-left: 70px;
}
Contrary to all the other styles, the "background-size: 20px;" 与所有其他样式相反,“ background-size:20px;” has no effect on my page, is not visible in Firebug, and as a sidenote is not highlighted as a valid CSS instruction in Notepad++.
对我的页面没有影响,在Firebug中不可见,并且在Notepad ++中,作为补充说明未作为有效的CSS指令突出显示。 Same with "background-size: 20px;"
与“ background-size:20px;”相同 or "background-size: 20px auto;"
或“ background-size:20px auto;”
Am I missing something? 我想念什么吗? Why does it not work?
为什么不起作用?
As the background-size docs state: 如背景尺寸文档所述 :
If the value of this property is not set in a background shorthand property that is applied to the element after the background-size CSS property, the value of this property is then reset to its initial value by the shorthand property.
如果此属性的值未在background-size CSS属性之后应用于该元素的背景速记属性中设置,则该属性的值将由shorthand属性重置为其初始值。
In other words, if you're using the shorthand property but don't include the background-size rule as a part of it, the separate background-size is essentially reset and ignored. 换句话说,如果您使用速记属性,但不包括background-size规则作为其一部分,则实际上将重置并忽略单独的background-size。
So to get around that you just need to roll it into the background shorthand you're already using by adding a slash after the background-position and including your size: 因此,要解决该问题,只需将其滚动到已使用的背景速记中,方法是在背景位置后添加斜线并包括您的尺寸:
background: #00A7E1 url(http://placekitten.com/200/200) left center/20px 20px no-repeat !important;
Your use of !important
in the background shorthand is preventing the background-size
property from applying, at least in Chrome. 您在背景速记中使用
!important
至少在Chrome中无法应用background-size
属性。
Removing the !important
allows the background-sizing to take effect. 删除
!important
可使背景大小生效。 See the jsfiddle: http://jsfiddle.net/QVXsj/9/ 参见jsfiddle: http : //jsfiddle.net/QVXsj/9/
"!important" should be avoided. 应避免使用“!important”。
I would split all background attributes as such: 我将这样分割所有背景属性:
.banner-text-BG {
background-image: url(images/sale_tag.png)
background-position: left center;
background-color: #00A7E1;
background-repeat: no-repeat;
background-size: 20px 20px;
}
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