Why my form is not compatible with some browsers?

Seems that some of our users are having difficulties using the forms from Macs.  Here is the feedback that we have received thus far.

I have tested your form on the mentioned browsers and I can see it loads fine, but when you type something on the fields nothing is shown, this seems to happen since the font color is the same like the fields background. 

Please, try injecting this code to resolve the issue: 

.form-textbox, .form-textarea {

    color: #000000 !important;

}

This guide will help you inject it: https://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes 

You may also provide us more details about the difficulties your users are facing while filling out your forms, we will be glad to further inspect in on our end.