@media screen and (min-width: 320px) and (max-width: 768px) 
{

    main
    {
        flex-direction: column-reverse;
    }

    .Main_Button
    {
        width: 100%;

        padding: 0;
    }

    .logo
    {
        display: none;
    }

    .Main_Button a:nth-child(2)
    {
        display: none;
    }

    .Main_Button a:nth-child(3)
    {
        width: 100%;

        display: block;
    }

    .Main_Button a:nth-child(3) p
    {
        margin: auto;
    }

    iframe
    {
        width: 100%;
        height: 100vh;
    }

}