body {
    background-color: #000;
    color: aliceblue;
    font-family: "Source Code Pro", monospace;
}

.center {
    margin: auto;
    width: 50%;
}

a {
    color: aquamarine;
}

a:visited {
    color: aquamarine;
}

a:hover {
    color: aliceblue
}

.main-link {
    font-size: large;
}

.imgbox {
    text-align: center;
}

.img.border-general {
    border: 0px solid gold;
}

img.filter {
    filter: grayscale(90%);
}

.clue {
    text-align: center;
    margin-top: 20px;
}

.bigmsg {
    font-size: 10vw;
}

form {
    text-align: center;
    margin-top: 60px;
}

div.wrong-answer {
    margin-top: 20px;
    color: aquamarine;
}

.info-msg {
    color: #737CA1;
}

a.black-link {
    color: #000;
}

a.black-link:visited {
    color: #000;
}

a.black-link:hover {
    color: #000;
}

footer {
    margin-bottom: 30px;
}

.book {
    text-align: left;
}