For website

1. bundle exec jekyll serve
2. all page font:html { line-height: 1.4; letter-spacing: 0.002em; font-size: 1rem; }
3. post card font setting:

   .post-card-meta {
   font-size: 0.8em;
   white-space: nowrap;
   display: block;
   padding-top: 4px;
   
   

4. post page font and margin, including data:

   .page-content {
   font-size: 1.02rem;
   margin: auto;
   margin-top: -80px;
   background-color: var(--background);
   padding: 20px;
   -webkit-border-top-left-radius: 20px;
   border-top-left-radius: 20px;
   -webkit-border-top-right-radius: 20px;
   border-top-right-radius: 20px;
   -webkit-box-shadow: 0px 2px 4px var(--shadow);
   box-shadow: 0px 2px 4px var(--shadow);
   /* page section width */
   /* max-width: 900px; */
   max-width: 90%;
   }
   

5. to change tag setting, search lower_case.

For markdown

1. Replace

   with \mid, replace + operator with+, so as *.

2. Replace \{ \} with \\{ \\} in inline equation.