.error {
    border: 1px solid red !important;  
    outline: 2px solid red !important;
    border-radius: 5px;
}

.select2-container .select2-selection--single { 
    height: 34px !important;
}
    .select2-container .select2-selection--single .select2-selection__rendered {
        line-height: 32px !important; 
    }