How to narrow or widen the Joomla Banner or Joomla Heading?

Go to your main file at;

/home/your foldername /public_html/templates/beez3/css/position.css

Open the position.css and edit it. Find these code;

#all {
    margin: 0 auto;
    max-width: 1050px;
    padding: 0;
    text-align: left;
    font-size: 0.8em

Adjust the max-width to your desired size. Takenote that the ideal size is 1050. If you change it too wide it will cut off the image shown at your laptop, your ipad and your smartphones. If you adjusted it to small it need the visitor of your website to zoom it in to see the contents. Just choose the ideal size something like from 1045 to 1050px.