I am new with CSS/stylesheets. How can I apply the stylesheet I created under the vendors folder to my users show page? It's for the profile thumbnail photos.

show.html.erb:

```
<div class="parent-container">
    <% @user.photos.each do |photo| %>
        <%= link_to image_tag(photo.image_url(:thumb)), photo.image_url%>
<% end %></div></p>

```