html
head
body
title
div, span
h1-h6
a href= , target=_blank
img src =
br
button
input
some html styling tags
1. center

CSS

padding, margin, colour (text colour), background
padding: 10px 12px 10px 14px;
font-size: 10px;
font-weight: 600; lean or thick
border: 2px solid black;