Of course you can modify the above example to your need. The important thing is to make it appear as a block (display:block) or an inline block (display:inline-block).
Like so many others, but with explanation in the css.
/* select all <a> elements with class "button" */
a.button {
/* use inline-block because it respects padding */
display: inline-block;
/* padding creates clickable area around text (top/bottom, left/right) */
padding: 1em 3em;
/* round corners */
border-radius: 5px;
/* remove underline */
text-decoration: none;
/* set colors */
color: white;
background-color: #4E9CAF;
}