我有以下标记:
<div class="won-container">
<div class="circle B"></div>
<div class="circle B"></div>
<div class="circle B"></div>
<div class="circle B"></div>
<div class="circle B"></div>
<div class="circle R"></div>
</div>
并在外部 CSS 样式表中定义了以下类:
.won-container {
float: left;
}
.circle {
width: 24px;
height: 24px;
position: relative;
margin-top: -12px;
}
.won-container .B
{
background-image: url('../images/circle_blue.png') ;
}
.won-container .G
{
background-image: url('../images/circle_green.png');
}
.won-container .R
{
background-image: url('../images/circle_red.png');
}
事实证明,浏览器只获得.won-container .B
显示蓝色图像的类。浏览器不知道.won-container .R
选择器。知道为什么吗?