Edit digital download mail

[Rukhsana]

Is there any way to edit the email template of digital download mail. I tried a lot but I can not add a download button to it . 

Here is the code

Hey {{customer.first_name}} {{customer.last_name}},

Thank you for your purchase! Here are your downloads:

{% for attachment in attachments %}
{{ attachment.product_name }}
{{ attachment.name }}
Download Link: {{ attachment.shop_url }}
{% endfor %}

Enjoy,
{{shop.name}}

[steve_michael2]

Hello @Rukhsana,

Hey {{customer.first_name}} {{customer.last_name}},

Thank you for your purchase! Here are your downloads:

{% for attachment in attachments %}
  <p><strong>{{ attachment.product_name }}</strong></p>
  <p>{{ attachment.name }}</p>
  <p>
    <a href="{{ attachment.shop_url }}" style="display: inline-block; padding: 10px 20px; color: #ffffff; background-color: #007bff; text-decoration: none; border-radius: 5px;">
      Download
    </a>
  </p>
{% endfor %}

Enjoy,  
{{shop.name}}

thanks!