send_digest.html.erb

<header style="text-align: center;color:black">
  <img src="https://avatars2.githubusercontent.com/u/4621650?s=200&v=4" style="width: 100px;height: 100px">
  <p style="font-size: 20px">[Public Lab] <%= @subject %></p>
  <p><%= Time.now.strftime("%B %-d %Y") %></p>
</header>

<div style="width:95%;margin: 0 auto;margin-top: 54px;color: black;">
  <p style="font-size: 1.2em; font-family: sans-serif;margin-bottom: 0;color: lightgray;">Based on what you're following at <a href="https://publiclab.org">PublicLab.org</a></p>
  <hr id="first" style="border: none;height: 1px;background-color: #e2e2e2;margin-bottom: 32px;">
  <table style="font-family: sans-serif;">
    <% @nodes.each do |n| %>
      <tr>
        <div style="margin-bottom: 15px">
          <h3 style="font-weight:500;margin:0;"><a href="<%= ActionMailer::Base.default_url_options[:host] + n.path %>"><%= n.title %></a></h3>
        </div>
        <div style="float:left;">
          <% if n.author.photo? %>
            <img style="width:40px;margin-right:8px;border-radius:50%;" src="https://<%= ActionMailer::Base.default_url_options[:host] %><%= n.author.photo_path(:thumb) %>"/>
          <% else %>
            <img style="width:100px;margin-right:8px;border-radius:50%;" src="https://www.gravatar.com/avatar/1aedb8d9dc4751e229a335e371db8058"/>
          <% end %>
        </div>
        <div style="margin-top: 20px;">
          <b style="font-weight: 500;"><%= n.author.username.capitalize %></b>
          <p style="margin: 0;color: #999;font-weight: 500;">Published <%= n.created_at.strftime("%B %-d %Y") %></p>
        </div>
        <% if n.main_image.present? %>
          <div style="padding-bottom: 30px;">
             <img src="https://<%= ActionMailer::Base.default_url_options[:host] %><%= n.main_image.path(:default) %>" style="width:120px;border-radius:5px;">
          </div>
        <% elsif n.scraped_image %>
          <div style="padding-bottom:30px;padding-top:10px;">
            <img src="https://<%= ActionMailer::Base.default_url_options[:host] %><%= n.scraped_image %>" style="width:120px;border-radius:5px;">
          </div>
        <% end %>
        <div colspan="2" style="padding-bottom: 32px;">
          <hr style="border: none;height: 1px;background-color: #e2e2e2;width: 140px;">
        </div>
      </tr>
    <% end %>
  </table>
  <p>Click <a href="https://<%= ActionMailer::Base.default_url_options[:host] %>/subscriptions">here</a> to choose your followed topics</p>
  <p>Click <a href="https://<%= ActionMailer::Base.default_url_options[:host] %>/settings">here</a> to change your subscription settings</p>
</div>