.sqs-block-video .sqs-block-content, .sqs-block-embed .sqs-block-content { position: relative; width: 100%; padding-top: 100%; /* Forces 1:1 ratio */ } .sqs-block-video iframe, .sqs-block-embed iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }