body {
    max-width: 600px;
    margin: 1rem auto;
    font-family: sans-serif;
    font-size: 16px;
    hyphens: auto;
}

form {
    display: flex;
}

input {
    flex-grow: 1;
    margin-right: 1rem;
    font: inherit;
    padding: 1rem;
    border: none;
    background-color: #eee;
    border-radius: 2px;
}

button {
    font: inherit;
    border: none;
    background-color: steelblue;
    color: white;
    padding: 1rem;
    border-radius: 2px;
}

table {
    border-collapse: collapse;
    width: 100%;
}

th, td {
    padding: 1rem;
}

th {
    text-align: left;
    font-weight: normal;
}

td {
    font-weight: bold;
}

tr:nth-child(2n+1) {
    background-color: #eee;
}