.commerce {
    margin: 0 auto;
    width: 900px;
}

@media (max-width: 640px) {
    .commerce {
        margin: 0 auto;
        width: 95%;
    }
}

h1 {
    text-align: center;
    display: block;
    padding: 10px 0;
    width: 100%;
    background-color: darkblue;
    color: white;
    font-size: 21px;
    font-weight: bold;
}

h2 {
    color: darkblue;
    display: block;
    font-size: 18px;
    padding: 10px 5px;
    font-weight: bold;
}

.link {
    text-align: center;
    display: block;
    width: 90%;
    text-align: center;
	font-size: 18px;
	font-weight: bold;
	color: #fff;
	background-color: orange;
	border: solid 1px orange;
	border-radius: 4px;
	padding: 10px 32px;
    margin: 50px auto;
}

table {
    margin-top: 10px;
    border-collapse: collapse;
}

th {
    border: solid 1px;
    width: 25%;
    padding: 5px;
    font-size: 12px;
}

td {
    border: solid 1px;
    padding: 5px;
    font-size: 12px;
}