我目前正在创建下拉菜单，该菜单将切换到侧边栏的右侧。我想删除下拉菜单周围的蓝色。我使用Foundation 5来创建下拉菜单。
以下是我制作的screenshot of dropdown
以下是我使用的CSS和HTML代码
.f-dropdown1 {
display: none;
left: -9999px;
list-style: none;
margin-left: 0;
position: absolute;
background: #FFFFFF;
border: solid 1px #cccccc;
font-size: 0.875rem;
height: auto;
max-height: none;
width: 100%;
z-index: 89;
margin-top: 2px;
max-width: 200px;
}
.f-dropdown1.open {
display: block;
}
.f-dropdown1>*:first-child {
margin-top: 0;
}
.f-dropdown1>*:last-child {
margin-bottom: 0;
}
.f-dropdown1:before {
border: inset 6px;
content: "";
display: block;
height: 0;
width: 0;
border-color: transparent transparent #FFFFFF transparent;
border-bottom-style: solid;
position: absolute;
top: -12px;
left: 10px;
z-index: 89;
}
.f-dropdown1:after {
border: inset 7px;
content: "";
display: block;
height: 0;
width: 0;
border-color: transparent transparent #cccccc transparent;
border-bottom-style: solid;
position: absolute;
top: -14px;
left: 9px;
z-index: 88;
}
.f-dropdown1.right:before {
left: auto;
right: 10px;
}
.f-dropdown1.right:after {
left: auto;
right: 9px;
}
.f-dropdown1.drop-right {
display: none;
left: -9999px;
list-style: none;
margin-left: 0;
/* position: absolute;
*/
background: #FFFFFF;
border: solid 1px #cccccc;
font-size: 0.875rem;
height: auto;
max-height: none;
width: 100%;
z-index: 89;
margin-top: 0;
margin-left: 65px;
max-width: 200px;
}
.f-dropdown1.drop-right.open {
display: block;
}
.f-dropdown1.drop-right>*:first-child {
margin-top: 0;
}
.f-dropdown1.drop-right>*:last-child {
margin-bottom: 0;
}
.f-dropdown1.drop-right:before {
border: inset 6px;
content: "";
display: block;
height: 0;
width: 0;
border-color: transparent #FFFFFF transparent transparent;
border-right-style: solid;
position: absolute;
top: 10px;
left: -12px;
z-index: 89;
}
.f-dropdown1.drop-right:after {
border: inset 7px;
content: "";
display: block;
height: 0;
width: 0;
border-color: transparent #cccccc transparent transparent;
border-right-style: solid;
position: absolute;
top: 9px;
left: -14px;
z-index: 88;
}
.f-dropdown1 ul:active {
border: 1px solid red !important;
}
.f-dropdown1 li {
cursor: pointer;
font-size: 0.875rem;
line-height: 1.125rem;
margin: 0;
}
.f-dropdown1 li:hover, .f-dropdown li:focus {
background: #EEEEEE;
border: none;
}
.f-dropdown1 li a {
display: block;
padding: 0.5rem;
color: #555555;
}
.f-dropdown1.content {
display: none;
left: -9999px;
list-style: none;
margin-left: 0;
position: absolute;
background: #FFFFFF;
border: solid 1px #cccccc;
font-size: 0.875rem;
height: auto;
max-height: none;
padding: 1.25rem;
width: 100%;
z-index: 89;
max-width: 200px;
}
.f-dropdown1.content.open {
display: block;
}
.f-dropdown1.content>*:first-child {
margin-top: 0;
}
.f-dropdown1.content>*:last-child {
margin-bottom: 0;
}
.f-dropdown1.radius {
border-radius: 3px;
}
.f-dropdown1.tiny {
max-width: 200px;
}
.f-dropdown1.small {
max-width: 300px;
}
.f-dropdown1.medium {
max-width: 500px;
}
.f-dropdown1.large {
max-width: 800px;
}
.f-dropdown1.mega {
width: 100% !important;
max-width: 100% !important;
}
.f-dropdown1.mega.open {
left: 0 !important;
}
.dropdown.button, button.dropdown {
position: relative;
padding-right: 3.5625rem;
}
.dropdown.button::after, button.dropdown::after {
border-color: #FFFFFF transparent transparent transparent;
border-style: solid;
content: "";
display: block;
height: 0;
position: absolute;
top: 50%;
width: 0;
}
.dropdown.button::after, button.dropdown::after {
border-width: 0.375rem;
right: 1.40625rem;
margin-top: -0.15625rem;
}
.dropdown.button::after, button.dropdown::after {
border-color: #FFFFFF transparent transparent transparent;
}
.dropdown.button.tiny, button.dropdown.tiny {
padding-right: 2.625rem;
}
.dropdown.button.tiny:after, button.dropdown.tiny:after {
border-width: 0.375rem;
right: 1.125rem;
margin-top: -0.125rem;
}
.dropdown.button.tiny::after, button.dropdown.tiny::after {
border-color: #FFFFFF transparent transparent transparent;
}
.dropdown.button.small, button.dropdown.small {
padding-right: 3.0625rem;
}
.dropdown.button.small::after, button.dropdown.small::after {
border-width: 0.4375rem;
right: 1.3125rem;
margin-top: -0.15625rem;
}
.dropdown.button.small::after, button.dropdown.small::after {
border-color: #FFFFFF transparent transparent transparent;
}
.dropdown.button.large, button.dropdown.large {
padding-right: 3.625rem;
}
.dropdown.button.large::after, button.dropdown.large::after {
border-width: 0.3125rem;
right: 1.71875rem;
margin-top: -0.15625rem;
}
.dropdown.button.large::after, button.dropdown.large::after {
border-color: #FFFFFF transparent transparent transparent;
}
.dropdown.button.secondary:after, button.dropdown.secondary:after {
border-color: #333333 transparent transparent transparent;
}<a data-options="align:right" data-dropdown="drop1" aria-controls="drop1" aria-expanded="false" href="#" class="left"><i class="fa fa-bell-o" aria-hidden="true"></i></a>
<ul id="drop1" class="f-dropdown1" data-dropdown-content aria-hidden="true" tabindex="-1">
<li><a href="#">This is a link</a></li>
<li><a href="#">This is another</a></li>
<li><a href="#">Yet another</a></li>
</ul>
答案 0 :(得分：2)
自定义基础提供的scss默认值或使用您自己的css文件覆盖它们。
More in their documentation here
如果你没有运行SASS，那么你需要你的覆盖样式表来到基础之后，这样你就不需要像使用那样做傻事了！重要。
在文档的示例中，它们的触发器是一个带有“按钮”类的按钮，因此您需要覆盖该类以获得所需的外观：
<a class="button" data-dropdown="tinyDrop" aria-controls="tinyDrop" aria-expanded="false">Link Dropdown »</a>
就个人而言，我会添加这样的内容来覆盖而不是更改默认的.button样式：
.button.my-dropdown-style {...}
答案 1 :(得分：0)
.f-dropdown1 {
outline: none;
}