JezK

Edit File: select-advanced.css

.rwmb-field .select2-container { height: auto; min-width: 200px; max-width: 100%; } #wpbody .select2-selection--single, #wpbody .select2-selection--multiple, .select2-dropdown { border-color: #ddd; } #wpbody .rwmb-select-advanced-dark .select2-selection--single, #wpbody .rwmb-select-advanced-dark .select2-selection--multiple, .rwmb-select-advanced-dark .select2-dropdown { border-color: #7e8993; } .select2-results__option { margin-bottom: 0; } .select2-container .select2-search--inline { margin-bottom: 0; } .select2-search--dropdown .select2-search__field { padding: 0 4px; min-height: 28px; } body > .select2-container { z-index: 999999; }