body {
    text-align: center;
    font-family: Arial, sans-serif;
    background-color: #9c9c9cf5;
}

.sisalto {
    max-width: 900px;
    background-color: #d8d8d8;
    margin-left: auto;
    margin-right: auto;
    padding: 30px;
}
        
  h1, h2 {
    color: #333;
}
ul {
    list-style-type: none;
    padding: 0;
}
ul li {
    background: #c2c2c2;
    margin: 10px 0;
    padding: 10px;
    border-left: 5px solid #333;
}
ul li a {
    text-decoration: none;
    color: #333;
}
ul li a:hover {
    color: #007BFF;
}
img {
    max-width: 50%;
    height: auto;
    display: block;
    margin: 20px 0;
    margin-left: auto;
    margin-right: auto;
}
.image-caption {
    font-style: italic;
    color: #666;
    text-align: center;
}
footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 10px 0;
    margin-top: 20px;
}