zulip/web/templates/navbar.hbs

<div class="header">
    <nav class="header-main" id="top_navbar">
        <div class="column-left">
            <a class="left-sidebar-toggle-button {{#if embedded}}hide-streamlist-toggle-visibility{{/if}}" tabindex="0" role="button">
                <i class="fa fa-reorder" aria-hidden="true"></i>
                <span class="left-sidebar-toggle-unreadcount">0</span>
            </a>
            <a href="" class="brand no-style">
                <img id="realm-navbar-wide-logo" src="" alt="" class="nav-logo no-drag"/>
                <img id="realm-navbar-icon-logo" alt="" src="{{ realm_icon_url }}" class="nav-logo no-drag"/>
            </a>
        </div>
        <div class="column-middle" id="navbar-middle">
            <div class="column-middle-inner">
                <div id="streamlist-toggle" class="tippy-zulip-delayed-tooltip {{#if embedded}}hide-streamlist-toggle-visibility{{/if}}" data-tooltip-template-id="show-left-sidebar-tooltip-template">
                    <a class="left-sidebar-toggle-button" role="button" tabindex="0"><i class="fa fa-reorder" aria-hidden="true"></i>
                        <span class="left-sidebar-toggle-unreadcount">0</span>
                    </a>
                </div>
                <div class="top-navbar-container">
                    <div id="message_view_header" class="notdisplayed">
                    </div>
                    <div id="searchbox">
                        <form id="searchbox_form" class="navbar-search">
                            <div id="searchbox-input-container" class="input-append">
                                <i class="search_icon zulip-icon zulip-icon-search"></i>
                                <input class="search-input input-block-level home-page-input" id="search_query" type="text" placeholder="{{t 'Search' }}"
                                  autocomplete="off"/>
                                <button class="search_close_button tippy-zulip-delayed-tooltip" type="button" id="search_exit" aria-label="{{t 'Exit search' }}" data-tippy-content="Close"><i class="zulip-icon zulip-icon-close" aria-hidden="true"></i></button>
                            </div>
                        </form>
                    </div>
                </div>
            </div>
        </div>
        <div class="column-right">
            <div class="spectator_login_buttons only-visible-for-spectators">
                <a href="/register/"  class="signup_button">
                    {{t 'Sign up' }}
                </a>
                <a class="login_button">
                    {{t 'Log in' }}
                </a>
            </div>
            <div id="userlist-toggle" class="hidden-for-spectators">
                <a id="userlist-toggle-button" role="button" class="header-button" tabindex="0">
                    <i class="zulip-icon zulip-icon-user-list"></i>
                </a>
            </div>
            <div id="help-menu">
                <a class="header-button tippy-zulip-delayed-tooltip" tabindex="0" role="button" data-tooltip-template-id="help-menu-tooltip-template">
                    <i class="zulip-icon zulip-icon-help-bigger" aria-hidden="true"></i>
                </a>
            </div>
            <div id="gear-menu" class="{{#if embedded}}hide-navbar-buttons-visibility{{/if}}">
                <a id="settings-dropdown" tabindex="0" role="button" class="header-button tippy-zulip-delayed-tooltip" data-tooltip-template-id="gear-menu-tooltip-template">
                    <i class="zulip-icon zulip-icon-gear" aria-hidden="true"></i>
                </a>
            </div>
            <div id="personal-menu" class="hidden-for-spectators">
                <a class="header-button tippy-zulip-delayed-tooltip" tabindex="0" role="button" data-tooltip-template-id="personal-menu-tooltip-template">
                    <img class="header-button-avatar" src="{{user_avatar}}"/>
                </a>
            </div>
            <div class="spectator_narrow_login_button only-visible-for-spectators" data-tippy-content="{{t 'Log in' }}" data-tippy-placement="bottom">
                <a class="header-button login_button">
                    <i class="zulip-icon zulip-icon-log-in"></i>
                </a>
            </div>
        </div>
    </nav>
</div>