body {
    background: #dfe6ee;
    color: #202020;
    font-family: "Meiryo", monospace;
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
    padding: 20px 0;
}

#container {
    width: 800px;
    margin: 0 auto;
    background: #fff;
    border: 1px solid #315f8c;
    box-shadow: 0 0 0 3px #9aa9b8;
}

#header {
    height: 118px;
    background: #3f78a8;
    color: #fff;
    text-align: center;
    line-height: 118px;
    font-size: 27px;
    font-weight: bold;
    border-bottom: 4px solid #b87333;
    letter-spacing: 1px;
}

#content {
    padding: 20px 30px 10px;
}

h1 {
    font-size: 18px;
    color: #315f8c;
    border-left: 6px solid #315f8c;
    border-bottom: 1px dashed #7898b6;
    padding: 4px 10px;
    margin: 28px 0 12px;
}

.update-date {
    text-align: right;
    font-size: 12px;
    color: #555;
}

table.spec-table {
    width: 100%;
    border-collapse: collapse;
    margin: 14px 0 20px;
}

table.spec-table th,
table.spec-table td {
    border: 1px solid #9db7cd;
    padding: 8px;
}

table.spec-table th {
    background: #e8f0f8;
    color: #315f8c;
    width: 24%;
    text-align: center;
    font-weight: normal;
}

.history-box {
    height: 138px;
    overflow-y: scroll;
    border: 2px inset #ddd;
    background: #fbfbfb;
    padding: 9px;
    font-size: 12px;
    white-space: pre-wrap;
}

.download-btn {
    display: block;
    margin: 20px auto 8px;
    width: 220px;
    text-align: center;
    color: #184b76;
    text-decoration: none;
}

.download-btn img {
    width: 150px;
    height: auto;
    display: block;
    margin: 0 auto 5px;
    border: 0;
}

.download-btn span {
    display: block;
    font-size: 11px;
}

.download-btn:hover {
    color: #b87333;
    text-decoration: underline;
}

.download-btn:hover img {
    filter: brightness(1.2);
}

.attention {
    color: #9b4f12;
    font-weight: bold;
}

#footer {
    text-align: center;
    border-top: 1px solid #315f8c;
    margin-top: 30px;
    padding: 14px;
    font-size: 12px;
    color: #555;
    background: #f0f4f8;
}