convert remove wordpress as static web wordpress relative link relative url
generally wordpress use theme, so customize web page maybe add a new theme,
change the theme name , add new web page,
but I find wordpress has its specialized syntax,
such as wordpress premalink
https://wordpress.org/documentation/article/customize-permalinks/
https://developer.wordpress.org/reference/functions/the_permalink/
need much time to get one's feet wet,
so if it could be programmed as generally html css js,
then common web knowledge could establish web.
after lots of search, find that in my host,
build the web in the root public_html folder works.
the root folder
has wp-content, wp-includes, etc folders,
first backup original files in public_html root folder
second, try modify index.php in root folder as
<head>
<link href="/style.css" rel="stylesheet">
</head>
<p>hello world</p>
<a href="./service.html">click</a>
<?php include "./footer.html" ?>
add style.css in root folder
p {
color: lime;
}
add service.html in root folder
service
footer.html
footer
then test if it works as static web.