Reply To: Shrink the entire site as shown in the photo

Hi,

Try the following in Customizer -> Additional CSS

@media screen and (max-width: 440px) {
.entry-content p .entry-summary p {
    font-size: 14px;
}
.entry-header .entry-title a {
    font-size: 18px;
}
.entry-header .entry-title {
    line-height: 1;
}
}

—————-
Article title is 18px
Article text is 14px

change the numbers as per your choice.

Photos and banners are auto resized.

After making the change, view in private mode in mobile during testing, else mobile might serve cached old copy.

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For more refer: https://themonic.com/customization-guide-for-iconic-one-pro-with-css-codes/