<div class=“panel panel-success” style=“margin-top: 30px;”>

<div class="panel-heading text-center">
    <span class="h3">{{ page.date | date: '%B' }}</span>
</div>
<div class="panel-body text-center">
    <div class="h1">{{ page.date | date: '%d' }}</div>
    <div>{{ page.date | date: '%Y' }}</div>
</div>

</div>

<div>

<a class="btn btn-default btn-block" href="https://twitter.com/share?url={{ page.url | absolute_url | uri_escape }}&via={{ site.twitter_username }}&text={{ page.title | uri_escape }}">
<i class="fa fa-twitter"></i> Tweet
</a>

</div>