/*  NB: PAGE DEFAULT is not the default template  but the "original" one */
.page-template-page-default:not(.woocommerce-account) .site-main.cont {
    width: min(728px, 100% - 168px);
    margin: 0 auto;

    a,a:hover,a:visited{    
        color: black;

    }
}

.woocommerce-checkout.page-template-page-default .site-main.cont {
    width: min(1024px, 100% - 168px);
    margin: 0 auto;
}