html {
            text-align: center;
            font-family: sans-serif;
            color: #111;
            background-color: #def;
        }

        a,
        a:hover,
        a:active,
        a:visited {
            color: #48a;
        }

        h1 {
            color: #7ac;
            margin: 20px 0 0 0;
        }

        #subhead {
            color: #aac;
            font-size: 80%;
            margin: 0 0 20px 0;
        }

        .explain {
            color: #aac;
            font-size: 70%;
            margin: 2px 0 0 0;
        }

        #passwords {
            padding: 0;
            margin-top: 18px;
            font-family: monospace;
            list-style-type: none;
            display: flex;
            justify-content: center;
            flex-direction: column;
        }

        #passwords li {
            margin-top: 16px;
        }