body {
    margin: 0;
    padding: 0;
    font-family: "Poppins";
}

.hidden {
    display: none;
}

.disabled {
    opacity: 0.1;
}

/* Header style. */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100px;
    z-index: 10;
}

.header .header-content {
    padding: 0 90px;
    height: 100%;
}

.header .header-content .logo {
    height: 100%;
    float: left;
    align-content: center;
}

.header .header-content .help {
    height: 100%;
    float: right;
    align-content: center;
}

.header .header-content .help a {
    color: black;
    text-decoration: none;
    font-weight: bold;
}

.header .header-content .start-again {
    height: 100%;
    float: right;
    align-content: center;
}

.header .header-content .start-again a {
    color: black;
    text-decoration: none;
    font-weight: bold;
}

/* Footer style. */

.footer {
    width: 100%;
}

.footer .footer-content {
    padding: 30px 90px 30px 90px;
}

.footer .footer-content .about-page p {
    font-size: 25px;
    font-weight: bold;
}

.footer .footer-content .seperaror {
    display: flex;
    flex-direction: row;
}

.footer .footer-content .seperaror .first-line {
    width: 50%;
    height: 2px;
    background: black;
}

.footer .footer-content .seperaror .second-line {
    width: 50%;
    height: 2px;
    background: lightgrey;
}

.footer .footer-content .d-flex {
    display: flex;
    flex-direction: row;
}

.footer .footer-content .list-pages {
    display: flex;
    flex-direction: row;
    margin-top: 30px;
}

.footer .footer-content .list-pages .page-item {
    padding: 0 70px 0 0;
    cursor: pointer;
}

.footer .footer-content .list-pages .page-item:last-child {
    padding-right: 0;
}

.footer .footer-content .list-pages .page-item a {
    text-decoration: none;
}

.footer .footer-content .list-pages .page-item .page-index,
.footer .footer-content .list-pages .page-item .page-name {
    font-size: 20px;
    color: #595959;
    font-weight: bold;
}

.footer .footer-content .list-pages .page-item .page-index {
    margin-right: 30px;
}

.footer .footer-content .list-pages .page-fill .page-index {
    font-family: Arial, Helvetica, sans-serif;
    color: white;
    background: black;
    padding: 10px 15px;
    border-radius: 50px;
}

.footer .footer-content .list-pages .page-current .page-index {
    font-family: Arial, Helvetica, sans-serif;
    color: white;
    background: #8BC34A;
    padding: 10px 15px;
    border-radius: 50px;
}

.footer .footer-content .list-pages .page-fill .page-name,
.footer .footer-content .list-pages .page-current .page-name {
    color: black;
}

.footer .footer-content .next-back-pages {
    display: flex;
    margin-left: auto;
    margin-top: 30px;
}

.footer .footer-content .next-back-pages .back-page,
.footer .footer-content .next-back-pages .next-page {
    align-content: center;
}

.footer .footer-content .next-back-pages .next-page {
    margin-left: 15px;
}

.footer .footer-content .next-back-pages .back-page a,
.footer .footer-content .next-back-pages .next-page a {
    text-decoration: none;
    padding: 20px 40px;
    border-radius: 20px;
    font-weight: bold;
}

.footer .footer-content .next-back-pages .back-page a {
    color: black;
    background: lightgray;
}

.footer .footer-content .next-back-pages .next-page a {
    color: white;
    background: black;
}

/* Change the style when the screen size is changed. */

@media only screen and (max-width: 1235px) {
    .footer .footer-content .about-page p {
        font-size: 24px;
    }

    .footer .footer-content .list-pages {
        display: none;
    }

    .footer .footer-content .next-back-pages {
        width: 100%;
    }

    .footer .footer-content .next-back-pages .next-page {
        margin-left: 0;
    }

    .footer .footer-content .next-back-pages .back-page {
        margin-right: auto;
    }

    .footer .footer-content .next-back-pages .next-page {
        margin-left: auto;
    }
}

@media only screen and (max-width: 1000px) {

    .header .header-content {
        padding: 0 80px;
    }

    .footer .footer-content {
        padding: 30px 80px 30px 80px;
    }

    .footer .footer-content .about-page p {
        font-size: 23px;
    }
}

@media only screen and (max-width: 900px) {

    .header .header-content {
        padding: 0 70px;
    }

    .footer .footer-content {
        padding: 30px 70px 30px 70px;
    }

    .footer .footer-content .about-page p {
        font-size: 22px;
    }
}

@media only screen and (max-width: 800px) {

    .header .header-content {
        padding: 0 60px;
    }

    .footer .footer-content {
        padding: 30px 60px 30px 60px;
    }

    .footer .footer-content .about-page p {
        font-size: 21px;
    }
}

@media only screen and (max-width: 700px) {

    .header .header-content {
        padding: 0 50px;
    }

    .footer .footer-content {
        padding: 30px 50px 30px 50px;
    }

    .footer .footer-content .about-page p {
        font-size: 20px;
    }
}

@media only screen and (max-width: 600px) {

    .header .header-content {
        padding: 0 40px;
    }

    .footer .footer-content {
        padding: 30px 40px 30px 40px;
    }

    .footer .footer-content .about-page p {
        font-size: 19px;
    }
}

@media only screen and (max-width: 500px) {

    .header .header-content {
        padding: 0 30px;
    }

    .footer .footer-content {
        padding: 30px 30px 30px 30px;
    }

    .footer .footer-content .about-page p {
        font-size: 18px;
    }
}

@media only screen and (max-width: 400px) {

    .header .header-content {
        padding: 0 20px;
    }

    .footer .footer-content {
        padding: 30px 20px 30px 20px;
    }

    .footer .footer-content .about-page p {
        font-size: 17px;
    }
}

@media only screen and (max-width: 300px) {

    .header .header-content {
        padding: 0 10px;
    }

    .footer .footer-content {
        padding: 30px 10px 30px 10px;
    }

    .footer .footer-content .about-page p {
        font-size: 16px;
    }
}