我有一堂课:
.grid_1, .grid_2, .grid_3, .grid_4, .grid_5, .grid_6, .grid_7, .grid_8, .grid_9, .grid_10, .grid_11, .grid_12, .grid_13, .grid_14, .grid_15, .grid_16 {
display: inline;
float: left;
margin-left: 10px;
margin-right: 10px;
}
现在我说要改变display: inline;
->display: block;
和float: left;
->float: none;
敌人一个元素;
我创建了另一个类:
.logonormal{
float:none;
display:block;
}
我 html 我说:
<header id="banner" role="banner" class="grid_12 logonormal">
但我在Firefox中看不到logonormal
。我做错了什么?