Flexbox Dark Mode Toggle Template #001
Easy HTML5 Construction

Actually, the term Flexbox Template is a misnomer.
To get started right you need to think of Flexbox as just another tool that makes structuring web pages with columns easier.
I've tried to construct these templates with as little HTML code as possible. I advise novice web developers to spend more time studying CSS , especially the clamp function and nesting in style sheets.
You shouldn't be using pixels in your designs anymore. Our templates use rems and viewport calculations as should you.
The Modal Menu
The Modal Menu is activated for navigation on smaller devices, when the drop down menu is hidden. If you are viewing this page on a device with a viewport width less than 768 pixels, you are using the Modal Menu to navigate.
Features
This Semantic Template provides working examples of simple flexbox, dark mode toggle, a modal menu, use of details function, a simple accordian menu, back button, top button and drop down menu using CSS.
Details and the Accordian
Here are two very simple gadgets you can use to vary how you present information.
Flexbox
Believe it or not the first draft of Flexbox Layout was added in 2008. Since then it has been revised several times and become more efficient and user friendly.
It was completely rewritten in 2013 and minor revisions have been added since that time.