body{
    color: #000033;
}
.sub_title {
    margin-top: 5px;
    margin-bottom: 5px;
}
.notice {
    display: inline-block;
    background-color: #ccff99;
    margin: 5px;
    padding: 15px;
}
h1 {
    color: #008080;
}
.secret {
    text-decoration: none;
}