body {
    background-color: #ededed;
}

h2 {
    color: white;
    background-color: black;
    text-align: center;
    font-size: 2em;
}

p {
    font-family: verdana;
    font-size: 15px;
}

span {
    color: white;
    background-color: red;
}

#primeira-coluna {
    width: 30%;
    float: left;
}

#segunda-coluna {
    width: 70%;
    margin-left: auto;
}

#paragrafos {
    clear: both;
}

.corpo-do-texto {
    font-family: serif;
}

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

table, th, td {
    border: 1px solid black;
}

thead th {
    background: darkgray;
}


tbody tr:nth-child(odd) {
    background: lightgray;
}

tbody tr:hover, tfoot tr:hover {
    background: black;
    color: white;
}