change text input box height. Showing very small on mobile devices.

change text input box height. Showing very small on mobile devices.On iphones it event cuts of bottom of user inputted text. Already checked off responive in css setting and used mobile widget

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In fact, when I cloned your form and tested with Iphone5, the fields seems ok as below. 

However, you can also inject below css code to enlarge fields. Please note that you can arrange px value according to how large you want. 

@media{

    .form-textbox,.form-dropdown {

        height :60px !important;

    }

}

Here is a guidance about how you can inject css code to your form. 

If you need any further assistance from our side, please let us know. We would be glad to help you.