What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
If you would like to make the drop down field of "Suburb" looked like the other default text box field, you can do that by using this custom CSS code:
border-color : #e4e2e2;
box-shadow: 0 1px 2px #eee inset
You can check my cloned form on how it will looked like using the code above: http://form.jotformpro.com/form/51064094141951?
Do let us know if you need more information on this.