https://lexus.jp/magazine/20210705/688/tec_qdlaser.html
’https://www.youtube.com/watch?v=XlZ0JKI9Rh8
https://www.tpgi.com/easy-content-organisation-with-html5/
https://uxplanet.org/best-practices-for-website-header-design-e0d55bf5f1e2
‘https://css-tricks.com/how-to-section-your-html/
https://www.webdesignleaves.com/pr/css/css_responsive_01.html