.o-mail-SearchMessagesPanel {
    flex-basis: 425px;
}

.o-mail-MessageCardList .card-body:hover .o-mail-MessageCard-jump {
    opacity: 100 !important;
}

.o-mail-MessageCard-jump {
    color: white;
}

.o_touch_device .o-mail-MessageCard-jump.btn {
    font-size: 0.9rem;
}