.container-canvas 
{
    margin-right: auto;
    margin-left: auto;
    text-align: center;
    width:100%;
}

.center
{
    float:none;
    margin-right: auto;
    margin-left: auto;
}

h1 
{
    text-align: center;
}

.product_container 
{
    border: 1px solid black;
    overflow: auto;
}