Umbraco-CMS/src/Umbraco.Web.UI.Client/src/views/components/html/umb-box/umb-box-header.html

<div class="umb-box-header" ng-transclude>
    <div class="umb-box-header-title" ng-if="title || titleKey">
        <localize ng-if="titleKey" key="{{titleKey}}"></localize>
        <span ng-if="title">{{title}}</span>
    </div>
    <div class="umb-box-header-description" ng-if="description || descriptionKey">
        <localize ng-if="descriptionKey" key="{{descriptionKey}}"></localize>
        <span ng-if="description">{{description}}</span>
    </div>
</div>