h1 {
    color: red;
    margin: auto;
    text-align: center;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

#puzzle {
    width: 100%;
    height: auto;
    box-shadow: 10px 10px 10px #747373;
}

.flip {
    -webkit-transform: scaleX(-1);
    transform: scaleX(-1);
}

a {
    text-decoration: none;
    color: red;
}

body {
    background-color: plum;
}

#button {
    margin-top: 3000%;
    text-align: center;
}

#noSelect {

    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;

}