DirectorySlash Off
RewriteEngine On
RewriteRule ^static.*\.html - [L]
RewriteRule ^(static/.+) $1.html [L]
RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d [OR]
RewriteCond %{REQUEST_FILENAME} -l
RewriteRule ^ - [L]
RewriteRule ^ index.php [L]