How to Inject Custom CSS?

The form expands when you type as follows.

https://www.nedia.ne.jp/blog/tech/website/2018/03/20/11535

I understand that the solution is to set the text to 16PX or higher, but where do I set those settings?

Hi 秋山知彦,

Thanks for reaching out to Jotform Support. It's really easy to Inject CSS Codes into your form. Let me walk you through it:

1. In Form Builder, click on the Paint Roller icon on the right side of the page to open Form Designer.

2. Now, in the Form Designer menu, click on the Styles tab, scroll down and paste the code into the Inject CSS Code box. That’s it. The code is automatically saved.

Give it a try and let us know how it goes.