app/views/signin/signin.html.erb
<div class="ui page stackable grid">
<div class="row">
<div class="four wide computer three wide tablet only column">
</div>
<div class="eight wide computer ten wide tablet sixteen wide mobile column">
<%= form_tag({}, method: :post, class: "ui form signin-form") do %>
<div class="ui segment top attached">
<h3>Sign In</h3>
</div>
<div class="ui attached segment">
<div class="ui required field">
<label>Email:</label>
<input type="email" name="email" class="ui input">
</div>
<div class="ui required field">
<label>Password:</label>
<input type="password" name="password" class="ui input">
</div>
<div class="ui error message"></div>
</div>
<div class="ui bottom attached segment right aligned">
<button class="ui green right labeled icon button">
Sign In
<i class="ui right arrow icon"></i>
</button>
</div>
<% end %>
<div class="four wide computer three wide tablet only column">
</div>
</div>
</div>