@media only screen and (max-device-width: 1490px) {    
 #left {
margin-right:1px;
}
#right {
margin-left:1px;
}  
}
@media only screen and (max-device-width: 1200px) { 
#left {
display:none;
}
}
@media only screen and (max-device-width: 950px) { 
#right {
display:none;
}
}

@media only screen and (max-device-width: 599px) { 
#wrap {
  width:98%;
}
#header {
width:100%;
}
}