Change Styles for Custom Components

@lindakwoo thanks for pointing this out. The custom CSS solution works, but in my case, removing the spacing by adjusting the margin and padding on the iframe ID didn't work. Instead, using the following:

._margin_zygox_1 {
    padding: 0;
}

worked. However, there was one other issue: all the custom components of different types were receiving the same class, so the padding affected all of them. I had to use the :has selector to resolve this. Thanks again—it worked!