http://bloglearner.blog.shinobi.jp
https://code.nomad.inc/blog/blogger/heading/
[ ボーダースタイルの値 ]
none, hidden, solid, double, groove, ridge, inset, outset, dashed, dotted
line-height
https://developer.mozilla.org/ja/docs/Web/CSS/line-height
https://shanabrian.com/web/html-css-js-technics/css-border.php
PR
