Fixed Embeded Google Maps Size

Site URL: https://sparkotechengineering.squarespace.com/

Help please. How to code a fix  size of my map in a in Mobile/Desktop. I used a Code Block. See reference picture for my issue.

Password: customer123

<iframe src="https://www.google.com/maps/d/embed?mid=1ygJwNpqnkjLHEFccAa6_yG8T_SAyt8D_" width="760" height="510"></iframe>

What is access password?

@tuanphan password: customer123

Our Company > History & Background

@tuanphan

@rwp

#block-yui_3_17_2_1_1594890176230_12559 iframe {
    max-width: 100%;
}