This is a less excel technical question, but more of a system problem. After pressing some buttons, the size of my Ribbon and the text on it became enormously big, however, the text, and the column headings etc, on the worksheet were fine. I tried many ways, yet still cannot find a solution to turn the size to normal. I am using a Windows 10, and the version of my Excel is 2016. Many of the tutorial online does not match my version.
Solved by B. B. in 26 mins