body {
    background-color:lightblue;
    width: 600px;
    margin-left: 300px;
}

table, th, td {
    border: 1px solid brown;
    border-collapse: collapse;
    padding: 2px;
    background: cornflowerblue;
}

th {
    background: yellow;
}

td {
    border: 1px 1px 0px 0px;
}

.cornice {
    border-width: 1px;
    border-style: dashed;
}