.entry-content iframe[src*="youtube.com"],
.entry-content iframe[src*="youtube-nocookie.com"],
.post-content iframe[src*="youtube.com"],
.post-content iframe[src*="youtube-nocookie.com"],
.single-post iframe[src*="youtube.com"],
.single-post iframe[src*="youtube-nocookie.com"] {
    display: block;
    width: 100% !important;
    max-width: 560px !important;
    height: auto !important;
    aspect-ratio: 16 / 9;
    margin: 20px auto !important;
    border: 0;
}