HTML/CSS basics

0. Anchor tag

Here we got a simple link:
Visit Google
Here's the HTML for it:
<a href='http://google.com'>Visit Google</a>

1. Underline

Let's remove the underline using the CSS code:
text-decoration: none;
Visit Google

2. Background color

Let's set a background color!
background: #4286f4;
Visit Google

3. Font color

Let's change the color using the CSS rule:
color: white;
Visit Google

4. Padding

Give some breathing space.
Let's add some padding to increase the space inside it:
padding: 0.5em 1em 0.5em 1em;
Visit Google
This CSS code sets top and bottom padding to 0.5em
and left and right padding to 1em.

5. Border-radius

A little roundness wouldn't be bad, eh?
border-radius: 3px;
Visit Google
And before you realized it, we turned a simple anchor tag to a full fledged decent looking button!