@charset "UTF-8";
/* aside無し */
#main{
  width: 100%;/* 80%; or 100%; */
  float: none;
}
#aside{
  width: 100%;/* 18%; or 100%; */
  margin: 0px 0px 0px 0px;/* 25px 0px 0px 2%; or 25px 0px 0px 0px; */
  float: none;
  display: none;/* block; or none; */
}

@media screen and (max-width:1180px){
#main{width:100%;margin:0px}
#aside{width:100%;display:block;margin:0px}
}