jasaraharja/public/vendor/select2-bootstrap4-theme-ma.../src/layout.scss

@import "~bootstrap/scss/functions";
@import "~bootstrap/scss/variables";

@import "single";
@import "multiple";

// basic
.select2-container {
    display: block;

    *:focus {
        outline: 0;
    }
}

// input-group
.input-group .select2-container--bootstrap4 {
    flex-grow: 1;
}
.input-group-prepend ~ .select2-container--bootstrap4 .select2-selection {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}
// waiting for css4
//.select2-container--bootstrap4:has(~ .input-group-append) .select2-selection {
//    border-top-right-radius: 0;
//    border-bottom-right-radius: 0;
//}

.select2-container--bootstrap4 {

    // input box
    .select2-selection {
        border: $input-border-width solid $input-border-color;
        border-radius: $input-border-radius;
        width: 100%;
    }

    // focused input box
    &.select2-container--focus {
        .select2-selection {
            border-color: $info;
            box-shadow: $input-focus-box-shadow;
        }

        // when open, hide bottom border
        &.select2-container--open .select2-selection {
            border-bottom: none;
            border-bottom-left-radius: 0;
            border-bottom-right-radius: 0;
        }
    }

    // disabled input box
    &.select2-container--disabled,
    &.select2-container--disabled.select2-container--focus {
        .select2-selection {
            background-color: $input-disabled-bg;
            cursor: not-allowed;
            border-color: $input-border-color;
            box-shadow: none;
        }
        .select2-search__field {
            background-color: transparent;
        }
    }

    // validated input box
    select.is-invalid ~ & .select2-selection,
    form.was-validated select:invalid ~ & .select2-selection {
        border-color: $danger;
    }
    select.is-valid ~ & .select2-selection,
    form.was-validated select:valid ~ & .select2-selection {
        border-color: $success;
    }

    // dropdown
    .select2-dropdown {
        border-color: $input-border-color;

        border-top: none;
        border-top-left-radius: 0;
        border-top-right-radius: 0;

        // dropdown opened above
        &.select2-dropdown--above {
            border-top: 1px solid $input-border-color;
            border-top-left-radius: $input-border-radius;
            border-top-right-radius: $input-border-radius;
        }

        // selected item
        .select2-results__option[aria-selected=true] {
            background-color: darken($light, 5%);
        }
    }

    // mouse hovered item
    .select2-results__option--highlighted,
    .select2-results__option--highlighted.select2-results__option[aria-selected=true] {
        background-color: $primary;
        color: $light;
    }

    // for <optgroup>
    .select2-results__option[role=group] {
        padding: 0;
    }

    // fixes vertical overflow
    .select2-results > .select2-results__options {
        max-height: 15em;
        overflow-y: auto;
    }

    .select2-results__group {
        padding: 6px;
        display: list-item;
        color: $secondary;
    }

    // all clear button
    .select2-selection__clear {
        width: 1.2em;
        height: 1.2em;
        line-height: 1.15em;
        padding-left: 0.3em;
        margin-top: 0.5em;
        border-radius: 100%;

        background-color: $secondary;
        color: $light;
        float: right;
        margin-right: 0.3em;

        &:hover {
            background-color: $dark;
        }
    }
}