compact_teams.css

thread .ts-message {
    padding-top: 0.1rem !important;
    padding-bottom: 0.1rem !important;
}

thread .ts-message .media-left {
    display: none !important;
}

.ts-message-thread-body .message-body {
    display: flex;
     width: -webkit-fill-available !important;
    padding: 0.4rem 0 .2rem !important;
}

thread .ts-message .conversation-common {
       width: -webkit-fill-available !important;
}

.reply-btn-wide .thread-action-reply-message {
    width: -webkit-fill-available !important;
}

.ts-message-thread-body .message-body-top-row {
    display: block !important;
    max-height: 4em !important;
}

.ts-message-list-container {
    max-width:100% !important;
}

virtual-repeat>.list-wrap>*.item-wrap {
    max-width: 100% !important;
}

.ts-o365-connector-card {
    margin-top: 0 !important;
    padding: .1rem 1.6rem .1rem !important;
}
.ts-card-thread-body .message-body-container {
    display: none !important;
}