Change text size within CARD IMAGE LAYOUT on mobile view only (AVENUE)

past this code in custom css box

@media only screen and (max-width: 640px) {
.sqs-block-image .design-layout-poster .image-subtitle p {
   font-family: Open Sans;
   font-weight: 600;
   font-style: normal;
   letter-spacing: 0em;
   text-transform: none;
   line-height: 1.5em;
   font-size: 9px !important;
}}

Worked like a charm - Thank you so much!!!

How can you do this with an "image poster" block instead?

4 hours ago, caseyscalf said:

How can you do this with an "image poster" block instead?

Can you share link to page where you use image poster?