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我目前正在創建將切換到側邊欄右側的下拉菜單。我想刪除下拉菜單週圍的藍色。我正在使用Foundation 5創建下拉菜單。如何刪除下拉式基礎5中的藍色突出顯示顏色？
這裏是screenshot of dropdown，我已經做
下面是CSS和HTML代碼，我用
.f-dropdown1 {
\t display: none;
\t left: -9999px;
\t list-style: none;
\t margin-left: 0;
\t position: absolute;
\t background: #FFFFFF;
\t border: solid 1px #cccccc;
\t font-size: 0.875rem;
\t height: auto;
\t max-height: none;
\t width: 100%;
\t z-index: 89;
\t margin-top: 2px;
\t max-width: 200px;
}
.f-dropdown1.open {
\t display: block;
}
.f-dropdown1>*:first-child {
\t margin-top: 0;
}
.f-dropdown1>*:last-child {
\t margin-bottom: 0;
}
.f-dropdown1:before {
\t border: inset 6px;
\t content: "";
\t display: block;
\t height: 0;
\t width: 0;
\t border-color: transparent transparent #FFFFFF transparent;
\t border-bottom-style: solid;
\t position: absolute;
\t top: -12px;
\t left: 10px;
\t z-index: 89;
}
.f-dropdown1:after {
\t border: inset 7px;
\t content: "";
\t display: block;
\t height: 0;
\t width: 0;
\t border-color: transparent transparent #cccccc transparent;
\t border-bottom-style: solid;
\t position: absolute;
\t top: -14px;
\t left: 9px;
\t z-index: 88;
}
.f-dropdown1.right:before {
\t left: auto;
\t right: 10px;
}
.f-dropdown1.right:after {
\t left: auto;
\t right: 9px;
}
.f-dropdown1.drop-right {
\t display: none;
\t left: -9999px;
\t list-style: none;
\t margin-left: 0;
\t /* position: absolute;
*/
\t background: #FFFFFF;
\t border: solid 1px #cccccc;
\t font-size: 0.875rem;
\t height: auto;
\t max-height: none;
\t width: 100%;
\t z-index: 89;
\t margin-top: 0;
\t margin-left: 65px;
\t max-width: 200px;
}
.f-dropdown1.drop-right.open {
\t display: block;
}
.f-dropdown1.drop-right>*:first-child {
\t margin-top: 0;
}
.f-dropdown1.drop-right>*:last-child {
\t margin-bottom: 0;
}
.f-dropdown1.drop-right:before {
\t border: inset 6px;
\t content: "";
\t display: block;
\t height: 0;
\t width: 0;
\t border-color: transparent #FFFFFF transparent transparent;
\t border-right-style: solid;
\t position: absolute;
\t top: 10px;
\t left: -12px;
\t z-index: 89;
}
.f-dropdown1.drop-right:after {
\t border: inset 7px;
\t content: "";
\t display: block;
\t height: 0;
\t width: 0;
\t border-color: transparent #cccccc transparent transparent;
\t border-right-style: solid;
\t position: absolute;
\t top: 9px;
\t left: -14px;
\t z-index: 88;
}
.f-dropdown1 ul:active {
\t border: 1px solid red !important;
}
.f-dropdown1 li {
\t cursor: pointer;
\t font-size: 0.875rem;
\t line-height: 1.125rem;
\t margin: 0;
}
.f-dropdown1 li:hover, .f-dropdown li:focus {
\t background: #EEEEEE;
\t border: none;
}
.f-dropdown1 li a {
\t display: block;
\t padding: 0.5rem;
\t color: #555555;
}
.f-dropdown1.content {
\t display: none;
\t left: -9999px;
\t list-style: none;
\t margin-left: 0;
\t position: absolute;
\t background: #FFFFFF;
\t border: solid 1px #cccccc;
\t font-size: 0.875rem;
\t height: auto;
\t max-height: none;
\t padding: 1.25rem;
\t width: 100%;
\t z-index: 89;
\t max-width: 200px;
}
.f-dropdown1.content.open {
\t display: block;
}
.f-dropdown1.content>*:first-child {
\t margin-top: 0;
}
.f-dropdown1.content>*:last-child {
\t margin-bottom: 0;
}
.f-dropdown1.radius {
\t border-radius: 3px;
}
.f-dropdown1.tiny {
\t max-width: 200px;
}
.f-dropdown1.small {
\t max-width: 300px;
}
.f-dropdown1.medium {
\t max-width: 500px;
}
.f-dropdown1.large {
\t max-width: 800px;
}
.f-dropdown1.mega {
\t width: 100% !important;
\t max-width: 100% !important;
}
.f-dropdown1.mega.open {
\t left: 0 !important;
}
.dropdown.button, button.dropdown {
\t position: relative;
\t padding-right: 3.5625rem;
}
.dropdown.button::after, button.dropdown::after {
\t border-color: #FFFFFF transparent transparent transparent;
\t border-style: solid;
\t content: "";
\t display: block;
\t height: 0;
\t position: absolute;
\t top: 50%;
\t width: 0;
}
.dropdown.button::after, button.dropdown::after {
\t border-width: 0.375rem;
\t right: 1.40625rem;
\t margin-top: -0.15625rem;
}
.dropdown.button::after, button.dropdown::after {
\t border-color: #FFFFFF transparent transparent transparent;
}
.dropdown.button.tiny, button.dropdown.tiny {
\t padding-right: 2.625rem;
}
.dropdown.button.tiny:after, button.dropdown.tiny:after {
\t border-width: 0.375rem;
\t right: 1.125rem;
\t margin-top: -0.125rem;
}
.dropdown.button.tiny::after, button.dropdown.tiny::after {
\t border-color: #FFFFFF transparent transparent transparent;
}
.dropdown.button.small, button.dropdown.small {
\t padding-right: 3.0625rem;
}
.dropdown.button.small::after, button.dropdown.small::after {
\t border-width: 0.4375rem;
\t right: 1.3125rem;
\t margin-top: -0.15625rem;
}
.dropdown.button.small::after, button.dropdown.small::after {
\t border-color: #FFFFFF transparent transparent transparent;
}
.dropdown.button.large, button.dropdown.large {
\t padding-right: 3.625rem;
}
.dropdown.button.large::after, button.dropdown.large::after {
\t border-width: 0.3125rem;
\t right: 1.71875rem;
\t margin-top: -0.15625rem;
}
.dropdown.button.large::after, button.dropdown.large::after {
\t border-color: #FFFFFF transparent transparent transparent;
}
.dropdown.button.secondary:after, button.dropdown.secondary:after {
\t 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">
\t \t \t \t <li><a href="#">This is a link</a></li>
\t \t \t \t <li><a href="#">This is another</a></li>
\t \t \t \t <li><a href="#">Yet another</a></li>
\t \t \t </ul>
\t \t \t