.custom-container {
    width: 1580px;
    margin-right: auto;
    margin-left: auto;
    padding-right: 15px;
    padding-left: 15px;
}

@media (max-width: 1580px) {
    .custom-container {
        width: 1140px;
    }
}

@media (max-width: 1140px) {
    .custom-container {
        width: 960px;
    }
}

@media (max-width: 960px) {
    .custom-container {
        width: 720px;
    }
}

@media (max-width: 720px) {
    .custom-container {
        width: 540px;
    }
}

@media (max-width: 540px) {
    .custom-container {
        width: 100%;
    }
}