I wanted to know if I can make transparent info-window background. I entered this code in the Design Settings box:
background-color: #ffffff! important;
opacity: 0.8! important;
But the underlying div remains full white
You have inserted full white color as a background color, Please make the value of opacity nearly to 0.1 to make it transparent. Please use back ground color as mentioned in below code.
background-color: rgba(237, 237, 116, 0.1);
Here 0.1 is opacity for transparent result.
I hope it helps you.