switch/addons/blog/view/default/archive.html

{layout name="common/layout" /}
<style>
    #archive-list {
        padding: 20px 40px 20px;
        background: #fff;
    }

    #archive-list > h2 {
        font-size: 34px;
        margin-bottom: 15px;
    }

    #archive-list li {
        margin-bottom: 15px;
    }
</style>
<div id="archive-list">
    {volist name="yearlist" id="postlist"}
    <h2>{$key}</h2>
    <ul class="list-unstyled">
        {volist name="postlist" id="post"}
        <li><a href="{$post.url}">{$post.title|htmlentities}</a></li>
        {/volist}
    </ul>
    {/volist}
</div>