wget can be used to save websites for offline viewing. Below is a script wget-web which takes the URL as argument.

#!/bin/bash

wget \
 --mirror \
 --continue \
 --relative \
 --no-parent \
 --convert-links \
 --progress=dot \
 --ignore-length \
 --no-check-certificate \
 --user-agent "Mozilla" \
 --no-parent \
     "$@"

Usage

wget-web "https://example.com"