添加 class 到 select 标签

Question

我正在尝试将 class 添加到 select 标记，以便下拉菜单可以继承一些 css 样式，但我无法应用该样式。我是否错误地格式化了 class？

这是我的代码：

packagesmenu {
    box-shadow: none!important;
    background: transparent!important;
    background-color: transparent!important;
    padding: 8px 5px!important;
    border-top: 1px solid #AAA!important;
    border-left: 1px solid #AAA!important;
    border-right: 1px solid #AAA!important;
    border-bottom: 1px solid #AAA!important;
    max-width: 100%!important;
    outline: none;
    border-radius: 0;
    margin-bottom:15px!important;
    text-transform:none!important;
}

packagesmenu:focus {
box-shadow: 0 0 5px 0 #ee2b30!important;
border-top: 1px solid #ee2b30!important ;
    border-left: 1px solid #ee2b30!important;
    border-right: 1px solid #ee2b30!important;
    border-bottom: 1px solid #ee2b30!important;
}

<select style="width:100%;display:block;max-width:600px;margin:0 auto;" onchange="window.location.href = this.value" class="packagesmenu" name="packagesmenu" >
<option>Find your location</option>
<option value="https://go.booker.com/location/vixennailsandspamilton/buy/series">
  Milton
</option>
<option value="https://go.booker.com/location/vixennailsandspamississauga/buy/series">
  Mississauga</option>
<option value="https://go.booker.com/location/vixennailsandspadanforth/buy/series">
  Danforth
</option>
<option value="https://go.booker.com/location/vixenburlington/buy/series">
  Burlington
</option>
<option value="https://go.booker.com/location/VixenNailsandSpaOakville/buy/series">
  Oakville
</option>
</select>

Answer 1

在 CSS 中，class selector 是一个名称前面有一个句号 (“.”) 和 ID selector 是前面有 哈希字符 (“#”).

的名称

所以你 class 名称声明错误。

.packagesmenu {
    box-shadow: none!important;
    background: transparent!important;
    background-color: transparent!important;
    padding: 8px 5px!important;
    border-top: 1px solid #AAA!important;
    border-left: 1px solid #AAA!important;
    border-right: 1px solid #AAA!important;
    border-bottom: 1px solid #AAA!important;
    max-width: 100%!important;
    outline: none;
    border-radius: 0;
    margin-bottom:15px!important;
    text-transform:none!important;
}

.packagesmenu:focus {
    box-shadow: 0 0 5px 0 #ee2b30!important;
    border-top: 1px solid #ee2b30!important ;
    border-left: 1px solid #ee2b30!important;
    border-right: 1px solid #ee2b30!important;
    border-bottom: 1px solid #ee2b30!important;
}

Answer 2

我清理了你的css。内联 css 也是。不要使用内联样式 - 这很糟糕且难以维护，总有一天你会发现，现在请相信我。不要使用 !importand，这是不好的做法，就不要使用。

在css申报：

一个元素bodyselect使用标签
a class .someclass 使用点和 class 名称
一个 id #bigid 使用哈希和 id 名称

没有 space。但是在 : 和 ; 之后总是放 space。现在允许没有 spaces，但良好的实践、可读性和传统是严格的 - spaces!

body{
background: #000;           /* this to see background of select */
}
select{                 /* no inline css */
display: block;
width: 100%;
max-width: 600px;
margin: 0 auto;
color: #aaa;
}
.packagesmenu {
background: 0;
border: 1px solid #aaa;
border-radius: 0;
outline: none;
max-width: 100%;
padding: 8px 5px;
margin-bottom: 15px;
}
.packagesmenu:focus {
box-shadow: 0 0 5px 0 #ee2b30;
border: 1px solid #ee2b30;
}

<select onchange="window.location.href = this.value" class="packagesmenu" name="packagesmenu" >
<option>Find your location</option>
<option value="https://go.booker.com/location/vixennailsandspamilton/buy/series">
  Milton
</option>
<option value="https://go.booker.com/location/vixennailsandspamississauga/buy/series">
  Mississauga</option>
<option value="https://go.booker.com/location/vixennailsandspadanforth/buy/series">
  Danforth
</option>
<option value="https://go.booker.com/location/vixenburlington/buy/series">
  Burlington
</option>
<option value="https://go.booker.com/location/VixenNailsandSpaOakville/buy/series">
  Oakville
</option>
</select>

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