.product {
    display: block;
    margin-left: auto;
    margin-right: auto;
    }

#staticpage-content {
    width : 30em;
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-top: 5em;
}
#listpage-content {
    width : 30em;
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-top: 5em;
}