body {
    margin: 40px auto;
    max-width: 650px;
    line-height: 1.6;
    font-size: 18px;
    color: #444;
    padding: 0 10px
}

h1,
h2,
h3 {
    line-height: 1.2
}

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

th,
td {
    padding: 8px;
    text-align: left;
    border-bottom: 1px solid #DDD;
}

tr:hover {
    background-color: #D6EEEE;
}