body {
    margin: 0;
    padding: 0;
    line-height:1.4;
    color:#333;
    font-family:Arial, sans-serif;
    font-size:0.9em;
    background-image:url("image/metagrossgijinkaa.png");
    background-repeat: no-repeat;            /* 背景を繰り返さない */
    background-position: 20% 80%;            /* 背景画像の位置は画面中央 */
     background-attachment:fixed;             /* 背景画像を固定する */
    background-color: #fff766
}
header {
    width: 600px;
    height: 100px;
    position: absolute;
    top: 50px;
    left: 50px;
}
nav {
    width: 220px;
    height: 350px;
    position: absolute;
    top: 200px;
    left: 50px;
    
}
    nav a:hover img {
        opacity: 0.8;
        filter: alpha(opacity=80);
    }
ul#menu{
    margin:0;
    padding:0;
    list-style-type: none;
}
article{
    width: 380px;
    height: 450px;
    position: absolute;
    top: 200px;
    left: 280px;
    background-color: #fffeb8
}
div#space {
    margin: 10px;
}
p {
    margin-bottom: 1em;
}