.user {
    width: 500px;
    height: 500px;
    border: 1px solid #ccc;
    margin: 15px;
    padding: 15px;
    float: left;
}

.msg {
    padding: 15px;
}

.title {
    padding-bottom: 15px;
}

.room {
    width: 310px;
}
.room_title{
    text-align: center;
}

.chair_item{
    width: 60px;
    height: 60px;;
    float: left;

    text-align: center;
    line-height: 60px;

    background: #ccc;
    border: 1px solid #000;
}

.clear{
    clear: both;
}