@media (max-width: 1280px) {

    * {
        overflow-x: hidden;
    }

    .container {
        display: flex;
        flex-wrap: wrap;
    }

    .avatar-header {
        width: 100%;
        display: flex;
        justify-content: center;
        order: 1;
    }

    .text-content {
        width: 100%;
        order: 2;
    }

    header h1 {
        width: 100%;
        height: auto;
        text-align: center;
    }

    header p {
        width: 100%;
        height: auto;
        text-align: center;

    }

    .text-content ul {
        text-align: center;
    }

    .group-items {
        flex-wrap: wrap;
    }

    .items {
        flex-wrap: wrap;
    }

    .college-items {
        flex-wrap: wrap;

    }

    .project-tumb {
        background-color: brown;
        width: auto;
        overflow-y: hidden;

    }

    .project-tumb img {
        width: 100%;
    }

    .description-project {
        display: block;
        width: 100vw;
        text-align: center;

    }

    .btn-repository {
        width: 100%;
        margin: 10px 0;
    }

    .btn-demo {
        width: 100%;
        margin: 10px 0;
    }

    .btn-menu {
        visibility: visible;
    }

    form {
        margin: 0 auto;
        display: flex;
        flex-wrap: wrap;
    }

    form input {
        width: 100%;
    }

    form textarea {
        width: 100%;
    }

    .container-btn {
        display: flex;
        justify-content: center;
        width: 100%;
    }

    form button {
        margin: 10px 0;
        width: 500px;
        height: 550px;
    }

    .send-error {
        width: 100%;
    }

    .send-sucess {
        width: 100%;
    }

    .float-btn {
        display: none;
    }
}


@media (max-width: 768px) {
    .lg-nav {
        display: none;
    }

    .sm-nav {
        display: block;
        font-size: 18px;

    }
}

    @media (max-width: 460px) {
        nav {
            font-size: 12px;
        }

        .container {
            display: flex;
        }

        .group-items {
            width: auto;
        }

        .items {
            width: 100%;
        }

        .college-items {
            width: 100%;
        }

        .project-tumb {
            width: auto;
            overflow-y: hidden;
        }
    }