.banner div {font-size:0;}

main > aside .banner ~ .banner {margin-top:15px;}
main > aside > * + * {margin-top:15px;}
body > footer {margin-top:15px;}
.box ~ .box {margin-top:15px;}

main > aside {margin-right:15px;}
#main-content {width:735px;}

#main-content.index .important {margin-top:15px;}