.announcement{
    width: 110px;
    height: 80px;
    position: relative;
}

.announcement-title{
    font-size: 2.0rem;
}

.announcement-content{
    font-size: 1.0rem;
}

.announcement-time{
    font-size: 1.0rem;
    color: #777777;
}

.important{
    border: 3px solid red;
}