* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.s1 {
    display: flex;
    justify-content: center;
    scale: 100%;
    padding: 50px;
    box-sizing: border-box;
}

@media (max-width:700px) {

    .s1 {
        display: flex;
        justify-content: center;
        scale: 60%;
        position: relative;
    }

    .n1 {
        display: none;
    }

    .n2 {
        position: absolute;
        top: 1px;
        padding: 50px;
        box-sizing: border-box;
    }
}

@media (min-width:700px) {
    .n2 {
        display: none;
    }
}