Customise Aweber Form

Hi there, I have an form that I created in [login to view URL] I want to get this added to my website, but it looks terrible as the design is rubbish. I need someone who can tweak the CSS to match another form on the page. The changes are very simple: - Change height and width of form fields (must be responsive though) - Change font style and size of field value - field value must disappear when someone clicks on the field - rounded edges on the button - tweak button text - style and size - form validation to not re-direct to another page if the fields are not filled out The form is very basic and I can show you can example of what we want it to look like. I can create video instructions too. I need this done today. Thanks