body {
    font-family: Arial, sans-serif;
    background-color: #b5b5b6ac;
    color: #333;
    margin: 0;
    padding: 0;
}

header {
    background-color: #878787;
    color: #fff;
    padding: 1em;
    text-align: center;
}

nav a {
    color: #fff;
    margin: 0 15px;
    text-decoration: none;
}

nav a:hover {
    text-decoration: underline;
}

main {
    padding: 20px;
}

h1, h2 {
    color: #333;
}

footer {
    background-color: #878787;
    color: #000000;
    text-align: center;
    padding: 1em;
    margin-top: 20px;
}
.logo {
    position: absolute;
            top: 10px;
            left: 10px;
            width: 100px; 
            height: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: center;
}
th {
    background-color: #f2f2f2;
}