.static { position: static; }
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
@media screen and (min-width: 30em) {
 .static-ns { position: static; }
 .relative-ns { position: relative; }
 .absolute-ns { position: absolute; }
 .fixed-ns { position: fixed; }
}
@media screen and (min-width: 30em) and (max-width: 60em) {
 .static-m { position: static; }
 .relative-m { position: relative; }
 .absolute-m { position: absolute; }
 .fixed-m { position: fixed; }
}
@media screen and (max-width: 60em) and (orientation: landscape) {
 .static-ml { position: static; }
 .relative-ml { position: relative; }
 .absolute-ml { position: absolute; }
 .fixed-ml { position: fixed; }
}
@media screen and (min-width: 60em) {
 .static-l { position: static; }
 .relative-l { position: relative; }
 .absolute-l { position: absolute; }
 .fixed-l { position: fixed; }
}