.selectBox{
    width: 100px;
    height: 36px;
    line-height: 36px;
    background: #f72323;
}
.selectBox input::-ms-clear, input::-ms-reveal{
    /*clear去掉叉  reveal去掉眼睛;但是只能去掉ie10及以上，ie9及以下去不掉*/
    display: none;
}

.selectBox .inputCase{
    position: relative;
    width: 100%;
    height: 100%;
    box-sizing: border-box;
}
.selectBox .inputCase input.imitationSelect{
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    border: 1px solid #ccc;
    display: block;
    text-indent: 20px;
    cursor: default;
}
.selectBox .inputCase i.fa{
    position: absolute;
    right: 10px;
    top: 10px;
    color: #007AFF;
    font-size: 20px;
    z-index: 99999;
}
.selectBox .fa{
    cursor: pointer;
}
.selectBox .selectUl{
    display: none;
    padding: 0;
    margin: 0;
    border-bottom: 1px solid #ccc;
    border-left: 1px solid #ccc;
    border-right: 1px solid #ccc;
    max-height:330px;
    overflow-y: scroll ;
}
.selectBox .selectUl li{
    height: 36px;
    line-height: 36px;
    list-style: none;
    text-indent: 20px;
    border-bottom: none;
    background: #fff;
    cursor: pointer;
}
.selectBox .selectUl li:hover{
    background: #ddd;
}
.selectBox .selectUl li:last-child{
    border-bottom: 0 none;
}

/* 添加以下CSS规则隐藏数字输入框箭头 */
.imitationSelect::-webkit-inner-spin-button,
.imitationSelect::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
.imitationSelect {
    -moz-appearance: textfield; /* Firefox */
}