table {
    margin: 6% auto;
    width: 80%;
}
td {
    border: 1px solid #ccc;
    padding: 2%;
    vertical-align: middle;
}
td a {
    text-decoration: underline;
}
tr > td:nth-child(2) {
    width: 20%;
    text-align: center;
}

@media (max-width: 767px) {
    table {
        width: 100%;
    }
    td img {
        width: auto;
    }
}