a {
    color: blue;
    text-decoration: none;
}

tr:nth-child(odd) {
    background: #EEE;
}

th, td {
    vertical-align: top;
    padding: 3px;
}

table {
    border-spacing: 0px;
}

.chars {
    color: #007700;
}

.ja {
    text-align: center;
    font-size: 2rem;
}

.ja:hover .char_cur {
    color: red;
}

.ja:hover .char_p1 {
    color: magenta;
}

.ja:hover .char_p2 {
    color: blue;
}

.ja:hover .char_bad {
    color: grey;
}

.en {
    text-align: center;
    font-size: 1.2rem;
}

details .chars {
    font-size: 3rem;
}

.index_page {
    max-width: 1000px;
    margin: auto;
}

.about_page, .batch_page {
    max-width: 800px;
    margin: auto;
    text-align: justify;
}

.about_page h2 {
    border-bottom: 1px solid #aaa;
}
.about_page h3:before {
    content: "➤ ";
}