.secret-button {
    position: absolute;
    z-index: 100;
    display: flex;
    align-items: center;
    font-size: 2vw;
    color: black;
}

.secret-button-top-right {
    top: 0;
    right: 0;
}

.secret-button-bottom-right {
    bottom: 0;
    right: 0;
}

.secret-button-bottom-left {
    bottom: 0;
    left: 0;
}

.secret-button-top-left {
    top: 0;
    left: 0;
}

.secret-button-visible {
    background-color: white;
    border: 2px solid red;
}

.secret-button-meta {
    margin: 0 auto;
    text-align: center;
    -webkit-user-select: none;
    /* Safari */
    -ms-user-select: none;
    /* IE 10 and IE 11 */
    user-select: none;
    /* Standard syntax */
}