Hi @kimsijin33 - you can use CSS to style the button to be larger. The following article walks through the various ways you can specify CSS:
The simplest CSS would be something as follows:
button {
font-size: 24px;
}
This will set the text size of all buttons on the page to be 24 pixels. To accommodate the larger text size, the entire button will be made larger as well.
Cheers,
Kirupa 
