Advertisements cover up some of the script on the page and when I type words into the search box, the letters are only half way visible
On my home page in the Google search box, when you type words the letters are cut off on the bottom. Also advertisements are on top of writing or things I want to see on web pages.
Every time Firefox opened
Reset the page zoom on websites that look wrong: "View > Zoom > Reset" ( Ctrl + 0 (zero)) See http://kb.mozillazine.org/Zoom_text_of_web_pages .......... If you increased the minimum font size then try a lower setting (default is none) as a too high value can cause issues like you described. Tools > Options > Content : Fonts & Colors: Advanced > Minimum Font Size Tools > Options > Content : Fonts & Colors: Advanced > "Allow pages to choose their own fonts, instead of my selections above"