grafana/public/app/features/dashboard/partials/variableValueSelect.html

<span class="template-variable tight-form-item" ng-show="!variable.hideLabel" style="padding-right: 5px">
	{{labelText}}:
</span>

<div style="position: relative; display: inline-block">
	<a ng-click="show()" class="variable-value-link tight-form-item">
		{{linkText}}
		<span class="label-tag" ng-repeat="tag in selectedTags" tag-color-from-name="tag.text">
			{{tag.text}}
			&nbsp;&nbsp;<i class="fa fa-tag"></i>&nbsp;
		</span>
		<i class="fa fa-caret-down"></i>
	</a>
	<input type="text" class="tight-form-clear-input input-small" style="display: none" ng-keydown="keyDown($event)" ng-model="search.query" ng-change="queryChanged()" ></input>

	<div class="variable-value-dropdown" ng-if="dropdownVisible">
		<div class="variable-options-wrapper">
			<div class="variable-options-column">
				<div class="variable-options-column-header" ng-if="variable.multi">
					Selected ({{selectedValuesCount}})
				</div>
				<a class="variable-option pointer" bindonce ng-repeat="option in search.options" ng-class="{'selected': option.selected, 'highlighted': $index === highlightIndex}" ng-click="optionSelected(option, $event)">
					<span class="fa fa-fw variable-option-icon"></span>
					<span>{{option.text}}</span>
				</a>
			</div>
			<div class="variable-options-column" ng-if="variable.tags.length">
				<div class="variable-options-column-header" ng-if="variable.tags.length">Tags</div>
				<a class="variable-option-tag pointer" ng-repeat="tag in tags" ng-click="selectTag(tag, $event)" ng-class="{'selected': tag.selected}">
					<span class="fa fa-fw variable-option-icon"></span>
					<span class="label-tag" tag-color-from-name="tag.text">{{tag.text}}&nbsp;&nbsp;<i class="fa fa-tag"></i>&nbsp;</span>
				</a>
			</div>
		</div>
	</div>
</div>