require ‘sinatra’ get(//) { erb :t } run Sinatra::Application __END__ @@ t <html><style>html { background: url(<%= params %>) #000 no-repeat center / contain; height: 100%; width: 100%; }</style></html>
require ‘sinatra’ get(//) { erb :t } run Sinatra::Application __END__ @@ t <html><style>html { background: url(<%= params %>) #000 no-repeat center / contain; height: 100%; width: 100%; }</style></html>