body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-image: url(taustakuva.jpg);
    background-attachment: fixed;
    background-size: cover;
    text-align: center;
}

.container {
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    background-color: #fff;
    padding: 25px;
}

img {
    max-width: 100%;
    margin-bottom: 20px;
    box-shadow: 2px 2px 10px #969696;
}
code {
    background-color: black;
    color: white;
    padding: 3px;
    overflow-wrap: break-word;
}

h1 {
    font-size: 35px;
    margin-bottom: 45px;
}