app/views/searches/_search_bar.html.erb
<div class="container-fluid search-bar">
<div class="container container-search-bar">
<div class="row justify-content-center">
<div class="col-md-6 col-lg-6 col-xl-4">
<%= form_tag search_path, method: :get, class: "form-inline" do %>
<%= label_tag :keywords, nil, hidden: true %>
<div class="input-group w-100">
<%= text_field_tag :keywords, params[:keywords],
class: "form-control", aria: { label: "Search" } %>
<div class="input-group-append">
<%= submit_tag "Search", name: nil, class: "btn" %>
</div>
</div>
<% end %>
</div>
</div>
</div>
</div>