#seite{margin:20px 30px}
h1{float:left;font-size:2.5em;text-align:left;width:55%}

#oben ul{float:right;text-align:right}

#mitte{float:left;width:47%}
#rechts{float:right;width:47%}

.box1{display:inline;float:right;width:38%}

.dev1{float:left;width:50%}
.dev2{float:right;padding:4px 0;text-align:right;width:50%}


.dev1 #nav{text-align:left}
ul#nav li{padding:0 30px 0 0}
form{float:right}


.amazonbox div{padding:2.5%;width:20%}