What is https?
From Wikipedia, HTTPS(HTTP Secure) is an adaption of the Hypertext Transfer Protocol(HTTP) for secure communication over a computer network. The communication protocol is encrypted by Transport Layer Security(TLS), or formerly, its predecessor, Secure Sockets Layer(SSL).
HTTPS = HTTP + TLS = HTTP + SSL = HTTP Secure。
HTTP的URL由“http://”起始且默认使用端口80不同
HTTPS的URL由“https://”起始且默认使用端口443
总结：HTTPS经由HTTP进行通信，但利用SSL/TLS来加密数据包。
How to configure?
Steps:
- host with a dedicated IP address
- buy a certificate or get a free one from some free site
- activate the certificate
- install the certificate
- update the site to use HTTPS
step2可以通过Let’s Encrypt获得certificate
转自How to get HTTPS: Setting up SSL on your website
个人不认为以上方法会很轻松。另一方面，事实上很多静态网站托管服务已经包含https的一键设置，并且免费。可以参考介绍一些免费好用的静态网站托管服务。
本站使用Netlify（推荐）。
Netlify配置
它的域名服务器在国外，所以国内访问会有点慢。
一键配置配置成功后的截图。
Reference
Wikipedia-HTTPS
How to get HTTPS: Setting up SSL on your website
介绍一些免费好用的静态网站托管服务