body {
    margin: 0;
    font-family: arial, sans-serif;
    background-color: #5a5a5a;
}
.sisaltoleveys, .container {
    padding-left: 30px;
    padding-right: 30px;
}
.container {
    min-height: 500px;
    padding-top: 10px;
    padding-bottom: 30px;
    background-color: #fff;
}
header, nav {
    padding-top: 5px;
    padding-bottom: 5px;
}
.oikealla {
    float: right;
}
header {
    background-color: #96afcc;
    height: 200px;
    color: #fff;
    background-image: url(kukkakuva.jpg);
}
nav {
    background-color: #cfbfa0;
}
footer {
    background-color: #2b2b2b;
    color: #fff;
    padding-top: 20px;
    padding-bottom: 40px;
}
.sisaltoleveys, .container, header, nav, body {
    margin-left: auto;
    margin-right: auto;
    max-width: 900px;}