how to show blog post based on tag

[vandanabharti]

<div class="blog-containers">
{%- for article in section.settings.blog1.articles -%}
<div class="blog-items `sytem{{ forloop.index }}">
<div class="design-wrap">
<div class="mobile-cato">
<div class="artical-imges">
<img src="{{ article.image | img_url: 'master' }}" alt="{{ article.title }}">
</div>
<div class="arical-title-container">
<h2 class="txxt_w1">{{ article.title }}</h2>
</div>
</div>

</div>
</div>
{%- endfor -%}
</div>-------------------i want to show blog post based on tag example tag name: "sleep" 

[Liquid_xPert_SJ]

@vandanabharti 

first of all you need to list all the tags using loop.

{% if article.tags.size > 0 %}
    {% for tag in article.tags %}
                {% if article.tags.size > 0 %}
                    {% for tag in article.tags %}
                     <a href="{{ blog.url }}/tagged/{{ tag | handle }}">{{ tag }}</a>
                      {% break %}
                    {% endfor %}
                {% endif %}
<a href="{{ article.url }}">{{ article.title }}</a>
<a href="{{ article.url }}" title="read more">read more</a>

    {% endfor %}
    {% endif %}