openmct/platform/commonUI/inspect/res/bubble.html

    <div class="t-infobubble s-infobubble l-infobubble-wrapper {{bubble.bubbleLayout}}">
        <div class="l-infobubble">
            <div ng-show="bubble.bubbleTitle.length > 0"
                 class="title">
                {{bubble.bubbleTitle}}
            </div>
            <span ng-transclude></span>
        </div>
    </div>