@media (max-width: calc(750PX - .001rem)){.a{color:red}}
@media (max-width: calc(750px - .001rem)){.b{color:red}}
@media (max-width: calc(750px - 0.001rem)){.c{color:red}}
@media (max-width: calc(750px -.001rem)){.d{color:red}}
@media (max-width: calc(750PX)){.e{color:red}}
@media screen and (max-width: calc(750PX - .001rem)){.f{color:red}}
.g{width:calc(750PX - .001rem)}
.h{width:calc(750px - .001rem)}