.adult_overlay {
    /* Height & width depends on how you want to reveal the overlay (see JS below) */
    height: 100%;
    width: 0;
    position: fixed; /* Stay in place */
    z-index: 100000000000; /* Sit on top */
    left: 0;
    top: 0;
    background-color: rgb(0, 0, 0); /* Black fallback color */
    background-color: rgba(0, 0, 0, 0.98); /* Black w/opacity */
    overflow-x: hidden; /* Disable horizontal scroll */
    /*transition: 0.5s;*/ /* 0.5 second transition effect to slide in or slide down the overlay (height or width, depending on reveal) */
}

/* Position the content inside the overlay */
/* The navigation links inside the overlay */
.adult_overlay a {
    padding: 8px;
    text-decoration: none;
    font-size: 36px;
    text-align: center;
    color: #d1d1d1;
    display: block; /* Display block instead of inline */
    /*transition: 0.3s;*/
}

.adult_overlay p {
    text-align: center;
    margin: 0 auto;
    margin-top: 2%;
    width: 75%;
    padding: 8px;
    text-decoration: none;
    font-size: 20px;
    color: #ffffff;
    display: block;
    /*transition: 0.3s;*/
}

.adult_overlay b {
    margin-top: 20%;
    text-align: center;
    padding: 8px;
    text-decoration: none;
    font-size: 30px;
    color: #ffffff;
    display: block; /* Display block instead of inline */
    /*transition: 0.3s; *//* Transition effects on hover (color) */
}

/* When you mouse over the navigation links, change their color */
.adult_overlay a:hover, .adult_overlay a:focus {
    color: #f1f1f1;
}

/* Position the close button (top right corner) */
.adult_overlay .closebtn {
    position: absolute;
    top: 20px;
    right: 45px;
    font-size: 60px;
}

/* When the height of the screen is less than 450 pixels, change the font-size of the links and position the close button again, so they don't overlap */
@media screen and (max-height: 450px) {
    .adult_overlay a {
        font-size: 20px
    }

    .adult_overlay .closebtn {
        font-size: 40px;
        top: 15px;
        right: 35px;
    }
}