By default, forms take up a narrow width to encourage form builders to design forms which work well across various devices and screen sizes. However, for some scenarios it may be desirable for a form to span the full width of the screen or simply be increased to accommodate larger forms. To do this you can use the custom CSS feature by following the steps below:
Open the form builder screen for the form you wish to modify
Click the "..." icon in the top right-hand corner to open the context menu
Click "Custom CSS" and enter the follow CSS
.form-container{
width: 100%;
max-width: 1500px;
}ℹ️ Note that the custom CSS feature is only available under a paid subscription