How to Change Colors and Transparency of the Background Behind Popups Using Upload Design
You can change the color and transparency of the background behind popups by following these steps:
To access advanced modifications of the offered designs, please, click on HTML/CSS Editor. It is done when you edit an overlay. Here, you may add additional fields, buttons, and change fonts, size, etc.
Add the following snippet to the html window:
Change the value field to your desired values: