When I use a script to display an popup, they destroy the design. I use the script with text ans html and also a plugin to set scripts on footer/header and other on each site.
this script: destroy the design. You can see it on: https://mendosana.ch/home_test/ <== destroyed site and original site ==> https://mendosana.ch/
What is the problem?

how can i give you the script code?