/*=======================404 start===================*/
.page404 {
    clear: both;
    display: block;
    width: 100%;
    height: 100%;
    background: #dde8f2;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-direction: column;
    flex-direction: column;
    -ms-flex-pack: distribute;
    position: relative;
    align-items: center;
    justify-content: center;
    padding: 15px;
}
.page404 .page404tit {
    font-size: 20px;
    color: #152f47;
    font-weight: bold;
    line-height: 1.2;
}
.page404 .page404back {
    width: 31%;
    max-width: 173px;
    margin: 20px 0px;
}
.page404 .page404pic {
    clear: both;
    display: block;
    width: 80%;
    text-align: center;
}
@media (min-width:411px) {
    .page404 .page404tit {
        font-size: 35px;
    }

    .page404 .page404back {
        margin: 30px 0px;
    }
}
@media (min-width:768px) {
    .page404 .page404tit {
        font-size: 35px;
    }

    .page404 .page404back {
        margin: 30px 0px;
    }
}
@media (min-width:992px) {
    .page404 .page404tit {
        font-size: 40px;
    }

    .page404 .page404back {
        margin: 30px 0px;
    }
}
@media (min-width:1200px) {
    .page404 .page404tit {
        font-size: 50px;
    }

    .page404 .page404back {
        margin: 38px 0px;
    }
}

/*=======================404 end===================*/