app/views/welcome/index.html.erb
<% provide(:title, 'Welcome') %>
<div class="text-center my-5">
<h1>Welcome to Twitter Clone</h1>
<p> See what’s happening in the world right now</p>
<%= link_to 'Sign up', signup_path, class: "btn btn-primary" %>
<%= link_to 'Sign in', login_path, class: "btn btn-secondary" %>
</div>