How can I eliminate space under header?

On the article pages I hid the author and timestamp for the articles, but now I am left with a big gap.  See image below.  How can I make this space smaller?

Here is what appears in my article_page.hbs file:

<div class="container-divider"></div>
<div class="container">
<nav class="sub-nav">
{{breadcrumbs}}
<div class="search-container">
<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" focusable="false" viewBox="0 0 12 12" class="search-icon">
<circle cx="4.5" cy="4.5" r="4" fill="none" stroke="currentColor"/>
<path stroke="currentColor" stroke-linecap="round" d="M11 11L7.5 7.5"/>
</svg>
{{search scoped=settings.scoped_kb_search submit=false}}
</div>
</nav>

<div class="article-container" id="article-container">
<aside class="article-sidebar" aria-labelledby="section-articles-title">
{{#if settings.show_articles_in_section}}
<div class="collapsible-sidebar">
<button type="button" class="collapsible-sidebar-toggle" aria-labelledby="section-articles-title" aria-expanded="false">
<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" focusable="false" viewBox="0 0 12 12" aria-hidden="true" class="collapsible-sidebar-toggle-icon chevron-icon">
<path fill="none" stroke="currentColor" stroke-linecap="round" d="M3 4.5l2.6 2.6c.2.2.5.2.7 0L9 4.5"/>
</svg>
<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" focusable="false" viewBox="0 0 12 12" aria-hidden="true" class="collapsible-sidebar-toggle-icon x-icon">
<path stroke="currentColor" stroke-linecap="round" d="M3 9l6-6m0 6L3 3"/>
</svg>
</button>
<span id="section-articles-title" class="collapsible-sidebar-title sidenav-title">
{{t 'articles_in_section'}}
</span>
<div class="collapsible-sidebar-body">
<ul>
{{#each section.articles}}
<li>
<a href="{{url}}" class="sidenav-item {{#is id ../article.id}}current-article{{/is}}">{{title}}</a>
</li>
{{/each}}
</ul>
{{#if section.more_articles}}
<a href="{{section.url}}" class="article-sidebar-item">{{t 'see_more'}}</a>
{{/if}}
</div>
</div>
{{/if}}
</aside>

<article id="main-content" class="article">
<header class="article-header">
<h1 title="{{article.title}}" class="article-title">
{{article.title}}
{{#if article.internal}}
<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" focusable="false" viewBox="0 0 16 16" class="icon-lock" title="{{t 'internal'}}">
<rect width="12" height="9" x="2" y="7" fill="currentColor" rx="1" ry="1"/>
<path fill="none" stroke="currentColor" d="M4.5 7.5V4a3.5 3.5 0 017 0v3.5"/>
</svg>
{{/if}}
</h1>
<!--hide author and article time stamp
<div class="article-author">
{{#if settings.show_article_author}}
<div class="avatar article-avatar">
{{#if article.author.agent}}
<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" focusable="false" viewBox="0 0 12 12" class="icon-agent">
<path fill="currentColor" d="M6 0C2.7 0 0 2.7 0 6s2.7 6 6 6 6-2.7 6-6-2.7-6-6-6zm0 2c1.1 0 2 .9 2 2s-.9 2-2 2-2-.9-2-2 .9-2 2-2zm2.3 7H3.7c-.3 0-.4-.3-.3-.5C3.9 7.6 4.9 7 6 7s2.1.6 2.6 1.5c.1.2 0 .5-.3.5z"/>
</svg>
{{/if}}
<img src="{{article.author.avatar_url}}" alt="" class="user-avatar"/>
</div>
{{/if}}
<div class="article-meta">
{{#if settings.show_article_author}}
{{#link 'user_profile' id=article.author.id}}
{{article.author.name}}
{{/link}}
{{/if}}
<ul class="meta-group">
{{#is article.created_at article.edited_at}}
<li class="meta-data">{{date article.created_at timeago=true}}</li>
{{else}}
<li class="meta-data">{{date article.edited_at timeago=true}}</li>
<li class="meta-data">{{t 'updated'}}</li>
{{/is}}
</ul>
</div>
</div>
-->
{{#if settings.show_follow_article}}
<div class="article-subscribe">{{subscribe}}</div>
{{/if}}
</header>

<section class="article-info">
<div class="article-content">
<div class="article-body">{{article.body}}</div>
{{#if attachments}}
<div class="article-attachments">
<ul class="attachments">
{{#each attachments}}
<li class="attachment-item">
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" focusable="false" viewBox="0 0 16 16" class="attachment-icon">
<path fill="none" stroke="currentColor" stroke-linecap="round" d="M9.5 4v7.7c0 .8-.7 1.5-1.5 1.5s-1.5-.7-1.5-1.5V3C6.5 1.6 7.6.5 9 .5s2.5 1.1 2.5 2.5v9c0 1.9-1.6 3.5-3.5 3.5S4.5 13.9 4.5 12V4"/>
</svg>
<a href="{{url}}" target="_blank">{{name}}</a>
<div class="attachment-meta meta-group">
<span class="attachment-meta-item meta-data">{{size}}</span>
<a href="{{url}}" target="_blank" class="attachment-meta-item meta-data">{{t 'download'}}</a>
</div>
</li>
{{/each}}
</ul>
</div>
{{/if}}
</div>
</section>

<footer>
<div class="article-footer">
{{#if settings.show_article_sharing}}
<div class="article-share">{{share}}</div>
{{/if}}
{{#if settings.show_article_comments}}
{{#if comments}}
<a href="#article-comments" class="article-comment-count" title="{{t 'go_to_comments'}}">
<span class="visibility-hidden">
{{t 'comments_count' count=article.comment_count}}
</span>
<span aria-hidden="true">
<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" focusable="false" viewBox="0 0 12 12" class="article-comment-count-icon">
<path fill="none" stroke="currentColor" d="M1 .5h10c.3 0 .5.2.5.5v7c0 .3-.2.5-.5.5H6l-2.6 2.6c-.3.3-.9.1-.9-.4V8.5H1C.7 8.5.5 8.3.5 8V1C.5.7.7.5 1 .5z"/>
</svg>
{{article.comment_count}}
</span>
</a>
{{/if}}
{{/if}}
</div>
{{#with article}}
<div class="article-votes">
<span class="article-votes-question" id="article-votes-label">{{t 'was_this_article_helpful'}}</span>
<div class="article-votes-controls" role="group" aria-labelledby="article-votes-label">
{{vote 'up' role='radio' class='button article-vote article-vote-up' selected_class="button-primary"}}
{{vote 'down' role='radio' class='button article-vote article-vote-down' selected_class="button-primary"}}
</div>
<small class="article-votes-count">
{{vote 'label' class='article-vote-label'}}
</small>
</div>
{{/with}}

<div class="article-more-questions">
{{request_callout}}
</div>
<div class="article-return-to-top">
<a href="#article-container">
{{t 'return_to_top'}}
<svg xmlns="http://www.w3.org/2000/svg" class="article-return-to-top-icon" width="20" height="20" focusable="false" viewBox="0 0 12 12" aria-hidden="true">
<path fill="none" stroke="currentColor" stroke-linecap="round" d="M3 4.5l2.6 2.6c.2.2.5.2.7 0L9 4.5"/>
</svg>
</a>
</div>
</footer>
<div class="article-relatives">
{{#if settings.show_recently_viewed_articles}}
{{recent_articles}}
{{/if}}
{{#if settings.show_related_articles}}
{{related_articles}}
{{/if}}
</div>
{{#if settings.show_article_comments}}
<div class="article-comments" id="article-comments">
<section class="comments">
<header class="comment-overview">
<h2 class="comment-heading">
{{t 'comments'}}
</h2>
<p class="comment-callout">{{t 'comments_count' count=article.comment_count}}</p>
{{#if comments}}
<div class="dropdown comment-sorter">
<button class="dropdown-toggle" aria-haspopup="true">
{{t 'sort_by'}}
<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" focusable="false" viewBox="0 0 12 12" class="dropdown-chevron-icon">
<path fill="none" stroke="currentColor" stroke-linecap="round" d="M3 4.5l2.6 2.6c.2.2.5.2.7 0L9 4.5"/>
</svg>
</button>
<span class="dropdown-menu" role="menu">
{{#each comment_sorters}}
<a aria-selected="{{selected}}" href="{{url}}" role="menuitem">{{name}}</a>
{{/each}}
</span>
</div>
{{/if}}
</header>

<ul id="comments" class="comment-list">
{{#each comments}}
<li id="{{anchor}}" class="comment">
<div class="comment-wrapper">
<div class="comment-info">
<div class="comment-author">
<div class="avatar comment-avatar">
{{#if author.agent}}
<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" focusable="false" viewBox="0 0 12 12" class="icon-agent">
<path fill="currentColor" d="M6 0C2.7 0 0 2.7 0 6s2.7 6 6 6 6-2.7 6-6-2.7-6-6-6zm0 2c1.1 0 2 .9 2 2s-.9 2-2 2-2-.9-2-2 .9-2 2-2zm2.3 7H3.7c-.3 0-.4-.3-.3-.5C3.9 7.6 4.9 7 6 7s2.1.6 2.6 1.5c.1.2 0 .5-.3.5z"/>
</svg>
{{/if}}
<img src="{{author.avatar_url}}" alt="" class="user-avatar"/>
</div>
<div class="comment-meta">
<span title="{{author.name}}">
{{#link 'user_profile' id=author.id}}
{{author.name}}
{{/link}}
{{#each author.badges}}
{{#is category_slug "titles"}}
<span class="community-badge community-badge-titles" title="{{description}}" aria-label="{{name}}">
{{#if icon_url}}
<img src="{{icon_url}}" alt="" />
{{/if}}
{{name}}
</span>
{{/is}}
{{/each}}
</span>

<ul class="meta-group meta-group-opposite">
{{#if editor}}
<li class="meta-data">{{date edited_at timeago=true}}</li>
<li class="meta-data">{{t 'edited'}}</li>
{{else}}
<li class="meta-data">{{date created_at timeago=true}}</li>
{{/if}}
</ul>

<div class="community-badge-container-achievements">
{{#each author.badges}}
{{#is category_slug "achievements"}}
{{#if icon_url}}
<div class="community-badge community-badge-achievements">
<img src="{{icon_url}}" alt="{{name}}" title="{{name}} | {{description}}" aria-label="{{name}}" />
</div>
{{/if}}
{{/is}}
{{/each}}
</div>
</div>
<div class="comment-labels">
{{#with ticket}}
<a href="{{url}}" target="_zendesk_lotus" class="status-label escalation-badge">
{{t 'request'}}{{id}}
</a>
{{/with}}
{{#if pending}}
<span class="comment-pending status-label status-label-pending-moderation">{{t 'pending_approval'}}</span>
{{/if}}
</div>
</div>

<section class="comment-body">{{body}}</section>
</div>

<div class="comment-actions-container">
<div class="comment-vote vote" role="group">
{{#vote 'up' role='radio' class='vote-up' selected_class='vote-voted'}}
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" focusable="false" viewBox="0 0 16 16">
<path fill="none" stroke="currentColor" stroke-linecap="round" stroke-width="2" d="M4 6.5l3.6 3.6c.2.2.5.2.7 0L12 6.5"/>
</svg>
{{/vote}}
{{vote 'sum' class='vote-sum'}}
{{#vote 'down' role='radio' class='vote-down' selected_class='vote-voted'}}
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" focusable="false" viewBox="0 0 16 16">
<path fill="none" stroke="currentColor" stroke-linecap="round" stroke-width="2" d="M4 6.5l3.6 3.6c.2.2.5.2.7 0L12 6.5"/>
</svg>
{{/vote}}
</div>
<div class="comment-actions actions">
{{#actions}}
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" focusable="false" viewBox="0 0 16 16">
<path fill="none" stroke="currentColor" d="M13.17 3.07l-1.64.71c-.48-.4-1.03-.72-1.63-.94l-.22-1.79a.511.511 0 00-.4-.44C8.86.54 8.44.5 8 .5c-.44 0-.86.04-1.28.11-.22.04-.38.22-.4.44l-.21 1.79c-.6.22-1.15.54-1.63.94l-1.65-.71a.491.491 0 00-.58.13c-.55.65-.99 1.4-1.29 2.21-.08.21 0 .44.18.58l1.45 1.08a4.91 4.91 0 000 1.87l-1.45 1.08c-.18.13-.25.37-.18.58.3.81.74 1.55 1.28 2.2.14.17.38.22.58.13l1.65-.71c.48.4 1.03.72 1.63.94l.21 1.79c.03.22.19.4.4.44.43.07.85.11 1.29.11.44 0 .86-.04 1.28-.11.22-.04.38-.22.4-.44l.21-1.79c.6-.22 1.15-.54 1.63-.94l1.65.71c.2.09.44.04.58-.13.54-.65.98-1.39 1.28-2.2.08-.21 0-.44-.18-.57L13.4 8.95c.07-.32.1-.63.1-.95s-.03-.63-.09-.94l1.45-1.08c.18-.13.25-.37.18-.58-.3-.81-.74-1.55-1.28-2.2a.51.51 0 00-.59-.13z"/>
<circle cx="8" cy="8" r="2.5" fill="none" stroke="currentColor"/>
</svg>
{{/actions}}
</div>
</div>
</div>
</li>
{{/each}}
</ul>

{{pagination}}

{{#form 'comment' class='comment-form'}}
<div class="avatar comment-avatar">
{{user_avatar class='user-avatar'}}
</div>
<div class="comment-container">
{{wysiwyg 'body'}}
<div class="comment-form-controls">
{{input type='submit' class="button button-large"}}
</div>
</div>
{{/form}}

<p class="comment-callout">{{comment_callout}}</p>
</section>
</div>
{{/if}}
</article>
</div>
</div>

Thanks in advance,
Victoria