How to create a website with Joomla
Change your template:
You can activate new template or edit the one you are using from the Template Manager. There are a couple of free themes you can use as default. Just select the template and click "Default". Of course, you can upload as many templates on the site as you want. You can do that via an FTP client by uploading them in the templates' folder. From the Template Manager you can also freely edit the HTML and CSS files of the uploaded templates or make some other automatic changes if available. From the template editor you can change colors, headlines, fonts and everything defined by the CSS and HTML code.