body {
    font-family: Arial, sans-serif;
    margin: 20px;
    background-color: #ffffff;
    color: #000000;
}

h1,
h2 {
    font-weight: bold;
}

h1 {
    font-size: 2.5em;
    color: #2c3e50;
}

h2 {
    font-size: 1.8em;
    color: #2980b9;
}

ul {
    list-style-type: none;
}

ul li::before {
    content: "•";
    font-weight: bold;
    display: inline-block;
    width: 1em;
    margin-left: -1em;
}

section {
    margin-bottom: 20px;
}

.breadcrumb {
    padding: 10px 20px;
    background-color: #f8f9fa;
    border-radius: 4px;
    margin-bottom: 20px;
}

.breadcrumb a {
    text-decoration: none;
    color: #007bff;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    color: #6c757d;
}

@media screen and (max-width: 600px) {
    main {
        overflow-x: auto;
        padding: 0;
    }
    
    table {
        width: 100%;
        min-width: 500px;
    }
    
    table a {
        display: inline-block;
        padding: 8px;
        min-height: 30px;
        min-width: 80px;
        text-align: center;
    }
}