body {
    max-width: 800px;
    margin: auto;
}

h2 {
    text-align: center;
}

form {
    text-align: right;
}

table {
    margin: 10px auto;
    border: solid 1px #0082bc
}

th {
    background-color: #0082bc;
    color: white;
    padding: 8px 15px;
}

td {
    padding: 2px;
    font-size: 13px;
    font-family: "游明朝", YuMincho, "ヒラギノ明朝 ProN W3", "Hiragino Mincho ProN", "HG明朝E", "ＭＳ Ｐ明朝", "ＭＳ 明朝", serif;
}

tr:nth-child(2n+1) {
    background-color: #e9f8ff;
}

tr:nth-child(2n) {
    background-color: white;
}

tr:hover {
    background-color: #c9edff;
}