.select2-container--default .select2-selection--single {

    background-color: #fff;
    border: 1px solid #eee;
    border-radius: 0;
    height: initial;
    padding: 5px;
}
.select2-container--default .select2-selection--single .select2-selection__arrow {
    top: 7px;
}
.select2-dropdown,
.select2-container--default .select2-search--dropdown .select2-search__field {
    border: 1px solid #eee;
}

/* somehow, ACC does not set it to 100%. To prevent, force it here */
.select2.select2-container.select2-container--default {
    width: 100%!important;
}