#onthispage{display:none}
div#container:after{content:""; display:table; clear:both}
#content p{max-width:35em}
@media screen and (max-width:749px){
#sidebar{float:left;width:130px}
#extra{float:left;width:79.9%}
#footer{clear:left;width:100%}
}
@media only screen and (min-width:750px){
div#wrapper{float:left;width:100%}
div#content{margin-left:130px}
div#sidebar{float:left;margin-left:-100%;width:130px}
div#extra{clear:left;width:100%}
#onthispage{display:block}
}