xmpp.chapril.org-conversejs/src/shared/chat/styles/unfurl.scss

@import "bootstrap/scss/functions";
@import "bootstrap/scss/variables";
@import "shared/styles/_mixins.scss";

.conversejs {
    @import "bootstrap/scss/card";

    .message {
        .card--unfurl {
            margin: 1em 0;
            @include media-breakpoint-down(sm) {
                max-width: 95%;
            }
            @include media-breakpoint-up(md) {
                max-width: 75%;
            }
            @include media-breakpoint-up(lg) {
                max-width: 66%;
            }
            @include media-breakpoint-up(xl) {
                max-width: 50%;
            }
        }
    }
}