Rocket.Chat/packages/rocketchat-ui/client/components/header/header.html

<template name="header">
<header class="rc-header">
		<div class="rc-header__wrap">

			<div class="rc-header__block rc-header--burger">
				{{> burger}}
			</div>

			<span class="rc-header__block">{{_ sectionName}}</span>

			{{#if Template.contentBlock}}
				{{> Template.contentBlock}}
			{{/if}}

			{{# unless hideHelp}}
				<div class="rc-header__section-help"></div>
			{{/unless}}

			{{#with toolbarButtons}}
				<div class="iframe-toolbar">
					{{#each buttons}}
					<button class="{{id}}">
						{{#if icon}}<i class="{{icon}}"></i>{{/if}}
						{{label}}
					</button>
					{{/each}}
				</div>
			{{/with}}
		</div>
	</header>
</template>