<IfModule mod_rewrite.c>
  RewriteEngine On

  RewriteCond %{REQUEST_URI} ^.*api/(.*)
  RewriteRule ^(.*)$ api/index.php [END]

  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteRule ^ index.html [QSA,L]
</IfModule>