.sb-video {
    margin: 4px 0;
    max-width: min(100%, 420px);
}
.sb-video video {
    display: block;
    width: 100%;
    max-height: 380px;
    background: #0f1114;
    border-radius: 12px;
}
.sb-message-media .sb-video {
    margin: 0;
}