style.css

body h1 {
    text-align: center;
    font-size: 40px;
    font-family: "Allerta Stencil", Sans-serif;
    color: white;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    color: #333;
    margin: 0;
    padding: 0;
}

.nav {
    display: flex;
    justify-content: center; /* Center the heading horizontally */
    align-items: center;
    background-color: #000000;
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    padding: 10px;
    z-index: 1000;
}

.hamburger {
    position: absolute; /* Position the hamburger icon on the left */
    left: 10px;
    color: white;
    font-size: 30px;
    cursor: pointer;
}

.nav h1 {
    margin: 0;
    font-size: 40px;
    color: white;
    text-align: center;
    flex-grow: 1; /* Allow the heading to take up remaining space */
}
.navoverlay {
    height: 100%;
    width: 0;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    background-color: rgba(0, 0, 0, 0.9);
    overflow-x: hidden;
    transition: 0.5s;
}

.nav-overlay-content {
    position: absolute;
    top: 25%;
    width: 100%;
    text-align: center;
    margin-top: 30px;
}

.nav-overlay-content a {
    padding: 8px;
    text-decoration: none;
    font-size: 36px;
    color: #818181;
    display: block;
    transition: 0.3s;
}

.nav-overlay-content a:hover,
.nav-overlay-content a:focus {
    color: #f1f1f1;
}

.container {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
    padding: 10px;
    height: auto;
}

.content {
    grid-column: 2 / 6;
    font-size: 18px;
    line-height: 1.6;
    padding-top: 80px;
}

.content h3,
.content h5 {
    text-align: center;
    padding: 10px;
    margin: 10px 0;
}

.flex {
    display: flex;
    flex-wrap: wrap;
    flex-direction: row;
}

.image img {
    border: 5px black solid;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 100%;
    height: auto;
}

.image {
    position: relative;
    padding: 5px;
    margin: 20px auto;
    display: block;
    background-color: rgba(0, 0, 0, 0.993);
}

.hide {
    display: none;
}

.button0:hover+.hide {
    display: block;
    color: #ff9393;
}

.button0,
.button1,
.button2,
.button3,
.button4 {
    position: absolute;
    background-size: cover;
    height: 20px;
    width: 20px;
    border-radius: 10px;
}

.button0 { top:37.3%; right: 41%;  }
.button1 { top: 53.5%; right: 41%;  }
.button2 { top: 21.1%; right: 41%;  }
.button3 { top: 66%; right: 41%;  }
.button4 { top: 78.3%; right: 41%;  }

.popup {
    display: none;
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.648);
    color: #fff;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.maincontent {
    position: relative;
    background-color: rgb(255, 255, 255);
    padding: 20px;
    color: #000;
    border-radius: 10px;
    width: 80%;
    max-width: 800px;
}

.close-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: #333;
    color: white;
    border: none;
    border-radius: 5px;
    padding: 5px 10px;
    cursor: pointer;
    font-weight: bold;
}

.close-btn:hover {
    background-color: red;
    transition: 0.3s ease;
}

.video {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 10px;
    margin: 30px 0;
    gap: 5px;
}

.video h3 {
    padding: 5px;
}

.quiz {
    grid-column: 1 / 7;
    background-color: rgba(238, 239, 209, 0.53);
    text-align: center;
    padding: 20px;
    margin: 30px 0;
}

.quiz .btn-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.quiz .next-btn,
.quiz .result {
    margin-top: 20px;
}

.quiz h2 {
    font-size: 25px;
    color: #000000;
    font-weight: 600;
}

.btn {
    background: #fff;
    color: #222;
    font-weight: 500;
    width: 50%;
    border: 1px solid #222;
    padding: 10px;
    margin: 10px 0;
    text-align: left;
    border-radius: 15px;
    font-size: large;
    cursor: pointer;
    text-align: center;
}

.btn:hover {
    background: #222;
    color: #fff;
    transition: all 0.3s;
}

#next-btn {
    background: #000000;
    color: #fff;
    font-weight: 500;
    width: 150px;
    border: 0;
    padding: 10px;
    margin: 20px auto 0;
    border-radius: 4px;
    cursor: pointer;
    display: none;
    border: 1px black solid;
}

#next-btn:hover {
    color: rgb(255, 255, 255);
    background-color: #333;
    transition: 0.2s all;
}

.correct {
    background: #9aeabc;
}

.incorrect {
    background: #ff9393;
}

.additional-resources {
    margin: 20px 0;
}

.additional-resources h3 {
    font-size: 18px;
}

.additional-resources ul {
    list-style-type: none;
    padding: 0;
}

.additional-resources li {
    margin: 5px 0;
}

.additional-resources a {
    color: blue;
    text-decoration: underline;
}

.social-share {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 20px;
}

.social-share a {
    text-decoration: none;
    font-size: 20px;
    padding: 10px 15px;
    border-radius: 5px;
    transition: background-color 0.3s, color 0.3s;
}

.social-share a:hover {
    font-size: large;
}

.social-share a.twitter {
    color: #1DA1F2;
    border-color: #1DA1F2;
}

.social-share a.linkedin {
    color: #0077b5;
    border-color: #0077b5;
}

.social-share a.github {
    color: #333;
    border-color: #333;
}

.social-share a.facebook {
    color: #4267B2;
    border-color: #4267B2;
}

.social-share h3 {
    justify-content: center;
    font-size: 18px;
    border-right: #000 1px solid;
    margin: 0 20px;
}

#topBtn {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 30px;
    z-index: 99;
    font-size: 18px;
    border: none;
    outline: none;
    background-color: #333;
    color: white;
    cursor: pointer;
    padding: 15px;
    border-radius: 10px;
}

#topBtn:hover {
    background-color: #555;
}

/* Mobile devices (portrait and landscape) */
@media only screen and (max-width: 600px) {
    .nav {
        font-size: 16px; 
    }

    .hamburger {
        font-size: 25px;
        left: 5px; /* Adjust left margin */
    }

    .nav h1 {
        font-size: 24px;
        margin-right: 0;;    
    }


    .content h3 {
        margin-top: 80px;
    }

    .content {
        grid-column: 1 / -1;
        padding: 20px;
    }

    .maincontent {
        width: auto;
        height: 450px; ;
        font-size: 16px;
        margin: 10px 5px;
        overflow: scroll;
    }

    .buttons button{
        width: 3%;
        height:3%;
        border-radius: 20px;
        background-color: #b0b0b0;
    }
    .button0 { top:38.3%; right: 41%;  }
.button1 { top: 53.5%; right: 41%;  }
.button2 { top: 23%; right: 41%;  }
.button3 { top: 65%; right: 41%;  }
.button4 { top: 77%; right: 41%;  }
    
    .image img {
        width: 100%;

    }

    .quiz h2 {
        font-size: 20px;
    }

    .btn {
        width: 100%;
    }

    .btn-container {
        font-size: 16px;
    }

    .video iframe {
        width: 100%;
        height: 100%;
    }

    .video h3 {
        margin-top: 0;
        font-size: 16px;
    }

    .correct {
        background: #9aeabc;
    }

    .incorrect {
        background: #ff9393;
    }
}

/* Tablets (portrait and landscape) */
@media only screen and (min-width: 601px) and (max-width: 900px) {

    .nav {
        font-size: 16px;
    }

    .content h3 {
        margin-top: 80px;
    }

    .content {
        grid-column: 1 / -1;
        padding: 10px;
    }

    .image img {
        width: 100%;
    }

    .quiz {
        width: 100%;
    }

    .quiz h2 {
        font-size: 22px;
    }

    .correct {
        background: #9aeabc;
    }

    .incorrect {
        background: #ff9393;
    }

    .btn {
        width: 75%;
    }

    .video h3 {
        margin-top: 0px;
    }

    .video iframe {
        width: 100%;
        height: 400px;
    }
}

/* Media query for mobile screens */
@media screen and (max-height: 600px) {
    .nav-overlay-content a {
        font-size: 20px;
    }
    .navclosebutton {
        font-size: 40px;
        top: 15px;
        right: 35px;
    }
    .nav-overlay-content {
        width: 100%;
        height: auto;
    }
}