@media (max-width: 991px) {
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    /* Genel sayfa stilini belirleme */
    body {
        font-family: 'Roboto', sans-serif;
        background-color: rgb(254, 251, 237);
        color: #495057;
        padding-top: 67px;
    }

    nav.navbar {
        height: 67px;
        padding: 8px 4px;
        background-color: rgb(254, 251, 237);
    }

    .navbar-collapse .navbar-nav {
        gap: 0px;
    }

    nav .nav-item:not(:last-child) {
        padding: 12px 8px;
        display: flex;
        justify-content: flex-start;
        align-items: center;
    }

    nav .sign-up-container {
        display: flex;
        justify-content: flex-start;
        align-items: center;
    }

    nav a.sign-up {
        width: 122px;
        text-align: center;
    }

    .section-1 {
        display: flex;
        padding: 48px 16px;
        flex-direction: column;
        justify-content: center;
        align-items: flex-start;
        gap: 32px;
        align-self: stretch;
    }

    .section-1 .collectible {
        color: var(--Blue-Gray-900, #0F172A);
        text-align: center;
        font-size: 56px;
        font-style: normal;
        font-weight: 800;
        line-height: 110%;
    }

    .section-1 .collectible-p {
        text-align: center;
    }

    .section-1 .sign-up-next {
        justify-content: flex-start;
        padding-left: 16px;
    }

    .section-1-square {
        width: 272px;
        height: 276px;
        margin-top: 26px;
    }

    .section-1 .sign-up-container {
        width: 53%;
        display: flex;
        justify-content: center;
        float: left;
    }

    .image-container>img {
        width: 350px;
        top: 46%;
    }

    .section-1 .section-1-first-col-links>.col:first-child {
        display: flex;
        justify-content: center;
    }

    .section-2 {
        padding: 48px 16px;
    }

    .section-2>.row {
        text-align: center;
    }

    .section-2 .section-2-col:not(:last-child) {
        margin-bottom: 32px;
    }

    .section-3 {
        padding: 48px 16px;
    }

    .section-3 .section-3-first-row-first-col-title-container {
        text-align: center;
        margin-bottom: 32px;
    }

    .section-3 .section-3-first-row-first-col-title {
        color: var(--White, #FFF);
        font-size: 32px;
        font-style: normal;
        font-weight: 700;
        line-height: 110%;
        margin: 0;
    }

    .section-4-container {
        padding: 16px 16px 56px;
    }

    .section-4 {
        padding: 32px 16px;
    }

    .section-4 .section-4-title {
        color: var(--Blue-Gray-900, #0F172A);
        text-align: center;
        font-size: 32px;
        font-style: normal;
        font-weight: 700;
        line-height: 110%;
        position: relative;
        z-index: 1;
    }

    .section-4 .section-4-desc {
        color: var(--Blue-Gray-900, #0F172A);
        font-size: 16px;
        font-style: normal;
        font-weight: 400;
        line-height: 140%;
    }

    .section-4 .section-4-desc:not(:nth-last-of-type(1)) {
        margin-bottom: 8px;
    }

    .section-4 .rectangle-28 {
        width: 49px;
        height: 50px;
        border-radius: 50px;
        opacity: 0.75;
        background: var(--Green-700, #15803D);
        position: absolute;
        z-index: 1;
        left: 20%;
        bottom: -30px;
    }

    .section-4 .screen-desktop {
        margin-top: 32px;
        position: relative;
    }

    .section-4 button.sign-up {
        margin: 24px auto 0;
    }

    .section-4 .deco-video {
        position: absolute;
        z-index: -1;
        width: 100%;
        height: auto;
    }

    .section-5-container .section-5-row-1-title {
        color: var(--Blue-Gray-900, #0F172A);
        text-align: center;
        font-size: 32px;
        font-style: normal;
        font-weight: 700;
        line-height: 110%;
    }

    .section-6-container {
        padding: 48px 16px 96px;
    }

    .section-6 .section-6-row-1-title {
        text-align: center;
        font-size: 32px;
        font-weight: 700;
        line-height: 110%;
        margin-bottom: 32px;
    }

    .section-6-container .section-6-row-1-desc {
        text-align: center;
        font-size: 16px;
        line-height: 140%;
        margin-bottom: 32px;
    }

    .section-8 .footer-first-col-first-title, .section-8 .footer-first-col-title, .footer-second-col-first-title,
    .footer-second-col-title, .footer-third-col-first-title, .footer-third-col-title, .footer-fourth-col-first-title,
    .footer-fourth-col-app-store, .footer-fourth-col-google-play, .footer-fourth-col-follow-us, .footer-fourth-col-social-links,
    .footer-second-row-second-col-title {
        text-align: center;
    }

    .section-8 .footer-second-row-first-col-title {
        text-align: center;
        margin-bottom: 24px;
    }

    footer.container-fluid {
        padding: 48px 16px;
    }

    .section-8>.section-8-second-row {
        padding: 48px 16px 0;
    }
}