body{
    background: #f7f7f7;
}
#rocket{
    width: 24vw;
    margin:50px auto;
}
#rocket img{
    width: 100%;
}
h4{
    text-align: center;
    font-size: 18px;
    margin-bottom: 50px;
    color: #333333;
}
p.split{
    margin: 0 15px;
    border-bottom: 1px solid #cccccc;
}
.title{
    font-size: 15px;
    color: #666666;
    margin-left: 45%;
    margin-top: 50px;
}
.item li{
    font-size: 13px;
    color: #999999;
    height: 30px;
    margin-left: 47.5%;
}
@media screen and (max-width: 768px){
    #rocket{
        width: 170px;
        margin:38px auto 47px;
    }
    .title{
        font-size: 15px;
        color: #666666;
        margin-left:30%;
        margin-top: 50px;
    }
    .item li{
        font-size: 13px;
        color: #999999;
        height: 30px;
        margin-left: 44%;
    }
}