.container {
    background-color: rgb(255, 255, 255);
    box-shadow: 0 0 1rem rgb(170 170 170);
    height: 100%;
    margin: auto;
    position: relative;
    width: 960px;
}

@media screen and (max-width: 960px) {
    .container {
        box-shadow: none;
        width: 100%;
    }
}