RewriteEngine On

RewriteCond %{HTTP_HOST} ^www\.syamchand\.com [NC]
RewriteRule ^(.*)$ https://syamchand.com/$1 [L,R=301]

RewriteCond %{HTTPS} !=on
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
ErrorDocument 404 /404.html