.content-holder-block {
	position: relative;
	z-index: 2;
}
.content-holder-block iframe {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
}

.content-holder-block .wp-block-image .alignleft {
    float: left;
    margin: 0.5em 2em 1em 0;
}
.content-holder-block .wp-block-image .alignright {
    float: right;
    margin: 0.5em 0 1em 2em;
}