h1.title {
    color: #ffffbb;
}

div.contents-body {
    background-color: #333;
}

header {
    height: 150px;
    background-image: url("https://www.fbexy.net/images-mosoroku/header.jpg");
}

body {
    background-color: #000;
}

.container-bg {
    background-color: #555;
}

.container {
    background-color: #fff;
}

a.caution:link {
    color: #ff3333;
    text-decoration: none;
    font-weight: bold;
}

a.caution:visited {
    color: #ff3333;
    font-weight: bold;
}
/*
*/

/* a.non-underline:link { */
/*     text-decoration: none; */
/* } */

/* a.non-underline:visited { */
/*     text-decoration: none; */
/* } */

.to-out-button {
    padding: 4px;
    border: ridge 4px red;
    background-color: #ffffbb;
    border-radius: 0px 8px 0px 8px;
}

a:link.to-out-button {
    font-weight: bold;
    text-decoration: none;
}

a:hover.to-out-button {
    background-color: #000;
    color: #ffffcc;
}

a:visited.to-out-button {
    font-weight: bold;
    text-decoration: none;
}