@media only screen and (max-width: 1024px) {
    .top_fix{
        height: 350px;
    }
}
@media only screen and (max-width: 768px) {
.top_fix{
    height: 300px;
}
}
@media only screen and (max-width: 640px) {
    .top_fix{
        height: 40vw;
    }
}
@media only screen and (max-width: 480px) {
    .top_fix{
        height: 44vw;
    }
}