Customise formatting and adding a stylesheet to Internet Explorer. 1. In Internet Explorer, click the Tools button, and then click Internet Options. 2. On the General tab, click Accessibility. 3. Select the Ignore colors specified on webpages, Ignore font styles specified on webpages, and Ignore font sizes specified on webpages check boxes, and then click OK twice. Adding a personalised stylesheet. 1. Follow the instructions above but leave the formatting check boxes unchecked. 2. Select 'Format documents using my stylesheet' 3. Browse to the relevant file. 4. Select the CSS file. 2.