Problem Zoho Forms rating field when viewing on phone

Problem Zoho Forms rating field when viewing on phone

Hello, 

I have a question related to the rating field in Zoho Forms. 
When I ask a question with a maximum of 10 stars, there's a problem when viewing the form on a mobile phone. 
Only 9 stars are shown in one line, the 10th star is shown on the next line. 
This is confusing for the users and doesn't look clean. 
I can't find a way to solve this, in the theme customizer I can't change the size of the rating field. 

How do I solve this issue? 

Thanks.