Place inside the <head> element to :
refresh page after 5 seconds:
<meta http-equiv="refresh" content="5">
Redirect to https://yourdomain.com/ after 5 seconds:
<meta http-equiv="refresh" content="5; url=https://yourdoamin.com/">
Redirect to https://yourdomain.com/ immediately:
<meta http-equiv="refresh" content="0; url=https://yourdomain.com/">