I use these custom rules:
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
RewriteCond %{HTTP_HOST} ^zvoort.nl
RewriteRule (.*) https://www.zvoort.nl/$1 [R=301,L]
</IfModule>
# END WordPress
See my screencast: https://screencast.com/t/MVbxELFobr1d