.select2-container--default .select2-selection--single {
    height: 40px !important;
    border-radius: 10px;
}

    .select2-container--default
    .select2-selection--single
    .select2-selection__rendered {
        line-height: 40px !important;
    }

    .select2-container--default
    .select2-selection--single
    .select2-selection__arrow {
        height: 40px !important;
    }