Write some HTML5, add flat.css, everything looks nice aligns easily, supports validation. Almost no classes to learn easy to build on top of, and no javascript.
See the Demo and Documenation
Add this link tag to your page.
<link href="https://unpkg.com/flatcss@2.0.8/flat.css" rel="stylesheet" type="text/css" media="screen">...or you can install with npm
npm install flatcss