site/_src/_assets/styles/bigchain/_select2-bigchaindb/layout.scss

@import 'select2/src/scss/core';

.select2-container--bigchaindb {
    @import 'single';
    @import 'multiple';

    .select2-dropdown {
        border-radius: $border-radius;
        box-shadow: 0 3px 10px rgba(0, 0, 0, .3);
        background: $gray-dark;
        color: $input-color;
        font-family: inherit;
        font-size: $font-size-sm;

        // resets
        border: 0;
    }

    + .form-label {
        pointer-events: none;
    }

    &.select2-container--open.select2-container--above {
        .select2-selection--multiple,
        .select2-selection--single {
            border-top-left-radius: 0;
            border-top-right-radius: 0;
        }
    }

    &.select2-container--open.select2-container--below {
        .select2-selection--multiple,
        .select2-selection--single {
            border-bottom-left-radius: 0;
            border-bottom-right-radius: 0;
        }
    }

    .select2-search--dropdown {
        padding: 0;

        .select2-search__field {
            @extend .form-control;
            padding-left: $spacer;
            padding-right: $spacer;
            border-bottom: none !important;
            background: rgba($input-border-color, .2);
        }
    }

    .select2-search--inline {
        .select2-search__field {
            background: transparent;
            border: none;
            outline: 0;
            box-shadow: none;
            -webkit-appearance: textfield;
        }
    }

    .select2-results > .select2-results__options {
        max-height: 20rem;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;

        @media (max-width: 27rem), (max-height: 27rem) {
            max-height: 11.25rem;
        }
    }

    .select2-results__option {
        padding: $input-padding-x $spacer $input-padding-x $spacer;
        margin-bottom: 0;
        display: block;
        cursor: pointer;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;

        &[role='group'] {
            padding: 0;
            border-bottom: 2px dashed $gray;
        }

        &[aria-disabled='true'] {
            color: #999;
        }

        &[aria-selected='true'] {
            background-color: transparent;
        }

        .select2-results__group {
            padding: 6px;
            padding-bottom: 0;
            cursor: default;
            display: block;

            &:empty { display: none; }
        }

        .select2-results__option {
            padding-left: $spacer;

            .select2-results__option {
                margin-left: -$spacer;
                padding-left: $spacer * 2;

                .select2-results__option {
                    margin-left: -($spacer * 2);
                    padding-left: $spacer * 3;

                    .select2-results__option {
                        margin-left: -($spacer * 3);
                        padding-left: $spacer * 4;

                        .select2-results__option {
                            margin-left: -($spacer * 4);
                            padding-left: $spacer * 5;

                            .select2-results__option {
                                margin-left: -($spacer * 5);
                                padding-left: $spacer * 6;
                            }
                        }
                    }
                }
            }
        }
    }

    .select2-results__option--highlighted[aria-selected] {
        background-color: $component-active-bg;
        color: $component-active-color;
    }
}