body {
    font-family: "Open Sans", verdana, arial, sans-serif;
    font-size: 18px;
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
    color: #2c3e50;
}

.container {
    max-width: 1000px;
    margin: 40px auto;
    padding: 30px;
    background-color: #ffffff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
    color: #2c3e50;
    font-size: 1.75rem;
    margin-bottom: 20px;
}

p,
ul {
    color: #34495e;
    line-height: 1.6;
}

.intro {
    margin-bottom: 20px;
}

ul {
    list-style-type: none;
    padding-left: 0;
    margin-bottom: 20px;
}

li::before {
    content: "•";
    color: #3498db;
    display: inline-block;
    width: 1em;
    margin-right: 0.5em;
}

.visualization {
    margin-top: 30px;
    margin-bottom: 30px;
}

iframe {
    width: 100%;
    height: 450px;
    border: none;
}

footer {
    font-size: 0.6rem;
    color: #7f8c8d;
    padding-top: 10px;
    border-top: 1px solid #e0e0e0;
}

footer p {
    margin-bottom: 5px;
}

.visualization iframe {
    width: 100%;
    height: 517px; /* Adjust this value as needed */
    margin-bottom: 0; /* Remove bottom margin */
    padding-bottom: 0; /* Remove bottom padding */
}

@media (max-width: 768px) {
    .container {
        margin: 20px;
        padding: 20px;
    }

    h1 {
        font-size: 24px;
    }

    iframe {
        height: 400px;
    }
}