app/views/devise/sessions/new.html.erb
<div class="row">
<div class="col-md-4"></div>
<div class="col-md-4">
<div class="panel panel-primary">
<div class="panel-heading">
<h2><strong>Welcome to ProjectScope</strong></h2>
</div>
<div class="panel-body">
<%= render "devise/shared/links" %>
</div>
</div>
</div>
<div class="col-md-4"></div>
</div>