所以我使用这种方法添加我的箭头:bootstrap 3 arrow on dropdown menu
在桌面上运行良好,但唯一的问题是移动视图中的箭头在崩溃时仍会显示(< 768px)。
演示:http://jsfiddle.net/nolabel/Mk9PD/
.navbar-nav>li>.dropdown-menu, ul.dropdown-menu {
border: 5px solid #7ed1e3;
border-radius: 10px;
}
.dropdown-menu:after {
position: absolute;
top: -16px;
left: 24%;
display: inline-block;
border-right: 11px solid transparent;
border-bottom: 11px solid #7ed1e3;
border-left: 11px solid transparent;
content: '';
}
.dropdown-menu:before {
position: absolute;
top: -17px;
left: 25%;
display: inline-block;
border-right: 12px solid transparent;
border-bottom: 12px solid #ccc;
border-left: 12px solid transparent;
border-bottom-color: rgba(0, 0, 0, 0.2);
content: '';
}
解决此问题的最佳方法是什么?
答案 0 :(得分:5)
您可以将:before
和:after
置于媒体查询中,并使用您希望仅显示的设备width
<强> demo 强>
@media screen and (min-width:750px) {
.dropdown-menu:after {
position: absolute;
top: -16px;
left: 24%;
display: inline-block;
border-right: 11px solid transparent;
border-bottom: 11px solid #7ed1e3;
border-left: 11px solid transparent;
content:'';
}
.dropdown-menu:before {
position: absolute;
top: -17px;
left: 25%;
display: inline-block;
border-right: 12px solid transparent;
border-bottom: 12px solid #ccc;
border-left: 12px solid transparent;
border-bottom-color: rgba(0, 0, 0, 0.2);
content:'';
}
}