.gravely-container{
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
}

@media (min-width: 768px) {
    .gravely-container {
        max-width: 720px;
    }
}

@media (min-width: 576px) {
    .gravely-container {
        max-width: 540px;
    }
}