.select2 {
    font-size: 13px;
}
.select2-results__option {
    font-size: 13px;
}
.select2-container--default .select2-selection__rendered .select2-selection--single {
    line-height: 1.4 !important;
    padding: 2px 4px;
}

.select2-selection__rendered {
    line-height: 24px !important;
}
.select2-container .select2-selection--single {
    height: 24px !important;
}
.select2-selection__arrow {
    height: 24px !important;
}

.select2-container--disabled {
    display: none;
}
/* ドロップダウンリストが狭すぎたのでサイズ拡大 */
.select2-results__options {
    max-height: 390px !important; 
}