#map_area {
  height: 500px;
  width:500px;
  margin: 0 10px 0 10px;
  position: relative;
}
#map {
  height: 500px;
  width: 500px;
  /*border:1px #FFF solid;*/
}
.sea_current_hanrei{
  margin:0;
  padding:0;
}
.sea_current_hanrei img{
  width:500px;
  max-width:500px;
}