PHP错误消息小于正常[关闭]

Recently I was testing my PHP script and I got an error,but the Xdebug message was too small like I had it on 50% in browser. I barely could read anything unless I zoomed in to 150-200%.

So i'm asking is there some option to increase size of the error message?

I tried researching this, but it seems like none ever issued thing.

EDIT:It adds <font size="1"> before the error, anyone knows why?

This is most likely due to a stylesheet of yours, or the browsers.