It was very easy to create a form here.

It was very easy to create a form here. A very good job done on this website. I resized the Width of my form but is there a way to resize the Height of my form using your website tools. Or will I have to use the source code to do this?

You can change the width and height of your form through CSS code:

.form-all{
    width: 500px !important;
    height: 500px !important;
}

Change the height and width to your prefer size.

Guide: How-to-Inject-Custom-CSS-Codes