File: modules/system/assets/ui/less/select.mixins.less

//
// Mixins
// --------------------------------------------------

.select-input-defaults() {
    background-color: @input-bg;
    border: 1px solid @input-border;
    border-radius: @input-border-radius;
    color: @input-color;
    font-size: @input-font-size;
    .box-shadow(@input-box-shadow);
}

.validation-state-focus(@color) {
    .select2-dropdown,
    .select2-selection {
        border-color: @color;
    }

    .select2-container--focus .select2-selection,
    .select2-container--open .select2-selection {
        border-color: darken(@color, 10%);
    }

    &.select2-drop-active {
        border-color: darken(@color, 10%);

        &.select2-drop.select2-drop-above {
            border-top-color: darken(@color, 10%);
        }
    }
}

// dropdown arrow when dropdown is open
.dropdown-arrow() {
        .select2-selection--single {
        //
        // Make the dropdown arrow point up while the dropdown is visible.
        //
        .select2-selection__arrow b {
            border-color: transparent transparent @color-select-icon transparent;
            border-width: 0 @caret-width-large @caret-width-large @caret-width-large;
        }
    }
}