.stacktable {
    width: 100%;
}

.st-head-row {
    padding: 5px 10px;
    background: #3498DB;
    color: #fff;
}

.st-head-row.st-head-row-main {
    font-size: 1.5em;
    padding-top: 0;
}

.st-key {
    width: 30%;
    text-align: right;
    padding: 5px 10px;
}

.st-val {
    width: 68%;
    padding: 5px 10px !important;
    text-align: left;
}

/* RESPONSIVE EXAMPLE */

.stacktable.large-only {
    display: table;
}

.stacktable.small-only {
    display: none;
}

@media (max-width: 800px) {
    .stacktable.large-only {
        display: none;
    }

    .stacktable.small-only {
        display: table;
    }
}