.tijiao{
    margin: 0 auto;
    text-align: center;
}
.cont{
    width: 40%;
    margin: 0 auto;
}
.kuai{
    margin-bottom: 1rem;
}
.msg-yan{
    height: 1em;
}
.fasong{
    width: 100%;
    /*height: 0.5rem;*/
    margin-bottom: 0.5rem;
}
.taitou{
    margin-bottom: 2em;
}


@media screen and (max-width:500px){
    .cont{
        width: 88%;
        margin: 0 auto;
    }
}