resistancemonitor/2.Web/static/css/select-dropdown.scss

$color: #c0c4cc;
$bgColor: #232526;
/deep/ .el-select-dropdown {
 background: $bgColor;
 border: 1px solid rgba(96, 98, 102, 0.8);
 text-align: left;
}
/deep/ .el-popper[x-placement^='bottom'] .popper__arrow {
 border-bottom-color: #606266;
}
/deep/ .el-popper[x-placement^='bottom'] .popper__arrow::after {
 border-bottom-color: $bgColor;
}
/deep/ .el-select-dropdown__item {
 color: $color;
}
/deep/ .el-select-dropdown__item.hover,
/deep/ .el-select-dropdown__item:hover {
 background: rgba(96, 98, 102, 0.8);
}