.select2-container {
    width: 100% !important;
}
.select2-container--default .select2-results>.select2-results__options {
    max-height: 500px !important;
}
.select2-container span.select2-selection.select2-selection--single {
    height: 34px;
    border-radius: 6px;
    padding: 1px 1px 1px 3px;
}
.select2-container--default .select2-results__option {
    padding: 3px 8px !important;
    font-size: 15px;
    line-height: 23px;
}
.select2-container--default .select2-selection--single .select2-selection__rendered {
    color: #555;
    font-size: 15px;
    line-height: 28px;
}