body{
    background-color: #99ccff;
    color: #313642;
    text-align: center;
}

#dore{
    font-size: 23px;
    margin: 5px auto;
    text-align: center;
}

div{
    background-color: #E0FFFF;
    border:3px solid #313642;
    font-size: 16px;
    margin: auto;
    width: 200px;
}

#koko{
    text-align: center;
}