body {
    text-align: center;
    background-color: #008000;
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
}

header {
    background-color: #2c3e50;
    color: white;
    padding:70px 50px;
}


ul.navbar {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #0000FF;
}

ul.navbar li {
    float: left;
}

ul.navbar li a {
    display: block;
    color: white;
    text-align: center;
    padding: 16px 20px;
    text-decoration: none;
    font-weight: bold;
}

ul.navbar li a:hover {
    background-color: #FFFF00;
    color: black;
}


main {
    padding: 20px;
}

.seccion-contenido {
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 1100px;
    margin: 20px auto;
    text-align: left;
    background: white;
    padding: 20px;
    border-radius: 10px;
}

.listas {
    flex: 1;
    padding: 20px;
}

.video-marco {
    flex: 1;
    text-align: center;
}


table {
    margin: 30px auto;
    width: 90%;
    border-collapse: collapse;
    background-color: white;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

table, th, td {
    border: 1px solid #ccc;
}

th {
    background-color: #0000FF;
    color: white;
    padding: 12px;
}

td {
    padding: 10px;
}


footer {
    background-color: #2c3e50;
    color: #bdc3c7;
    padding: 20px;
    margin-top: 40px;
    border-top: 5px solid #FFFF00;
}