layout.css

* {
    font-size: medium;
    user-select: none;
}

body {
    margin: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.flex-row {
    display: flex;
    justify-content: center;
    align-items: stretch;
    gap: 1rem;
}

table {
    border-collapse: collapse;
}

th {
    height: 2rem;
    font-size: x-large;
}

td {
    padding: 0.25rem 0.5rem;
}

.control-box {
    width: 30rem;
    text-align: center;
    vertical-align: middle;
}

.control-box td {
    padding: 0.5rem 0;
}

select, button {
    padding: 0.25rem 1rem;
    cursor: pointer;
}

.col-box {
    width: 20rem;
}

.col-box td:nth-child(2) {
    text-align: right;
}

.list-box {
    width: 25rem;
}

.list-box td {
    text-align: center;
    padding: 1rem;
}

ul {
    margin: 0;
    display: inline-block;
    text-align: left;
    padding-left: 1.25rem;
}

ul > p {
    margin-top: 0;
    margin-bottom: 0.25rem;
    position: relative;
    left: -1.25rem;
}