How to change the Twitter widget font size?

Can anybody tell me how I can change the font size of my Twitter widget? I copied the code from the Twitter website, but the text is too small to read. The code looks like this

‘<script src=”https://widgets.twimg.com/j/2/widget.js”></script&gt;
<script>
new TWTR.Widget({
version: 2,
type: ‘profile’,
rpp: 8,
interval: 6000,
width: ‘auto’,
height: 300,
theme: {
shell: {
background: ‘#ffffff’,
color: ‘#000000’
},
tweets: {
background: ‘#a8a8a8’,
color: ‘#ffffff’,
links: ‘#384f63’
}
},
features: {
scrollbar: true,
loop: false,
live: false,
hashtags: true,
timestamp: true,
avatars: true,
behavior: ‘all’
}
}).render().setUser(‘edokoch’).start();
</script>’