.cen {
    text-align: center;
    padding-top: 3em;
}

.red {
    color: red;
    font-size: 30px;
    font-weight: bold;
    margin: 0;
}

.big {
    font-size: 60px;
    margin: 0;
    font-weight: bold;
}

.flex {
    display: flex;
    flex-wrap: wrap; 
    justify-content: center;
}

.katudou {
    line-height: 45%;
    padding-left: 20px;
    padding-right: 20px;
}

.ninzuu {
    padding-left: 20px;
    padding-right: 20px;
    line-height: 45%;
}

.image {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.sea {
    width: 200px;
    padding: 3px;
}

.yuuhi {
    width: 200px;
    padding: 3px;
}

.QR {
    width: 100px;
}

.qr {
    padding-right: 20px;
    padding-left: 20px;
}

.renraku {
    text-align: center;
    padding-top: 20px;
    padding-bottom: 30px;
    font-size: 21px;
}

body {
    background-image: url(./hatarakukatati.png);
    background-repeat: no-repeat;    
    background-size: cover;
}

.renraku p {
    margin: 0;
}