body {
    font-family: sans-serif;
    line-height: 1.6;
    max-width: 800px;
    margin: 40px auto;
    padding: 0 20px;
    color: #333;
}

header {
    border-bottom: 2px solid #eee;
    padding-bottom: 20px;
    margin-bottom: 20px;
}
    
.meta {
    color: #888;
    font-size: 0.9em;
}

#article-content img {
    max-width: 100%;
}

.sub-title01 {
    color: #1f6054;
    font-size: 20px;
}