calculator

A simple web based calculator

Technologies

HTML
CSS
JAVASCRIPT

CSS Styling

We can style HTML elements in four ways

Through element specific attributes like width and height.
Using inline css through style attribute.
Putting all CSS in the style element of head element.
Importing styles from a .css file.

HTML DIV tag

div element is used to make divisions in html page, this makes it easy to style and make html element.

FORM inputs

INPUT is used to get the user input either from keyboard or mouse, examples: text, number, checkbox, radio, file etc.
margin: auto sets the element in the center of it's parent.
Try to use % in the measurings in the CSS, it helps with responsive UI.
p tag is a block element i.e taking the whole line whilst span is an inline element i.e only takes the width of the text