@charset "UTF-8";

.main {
  height: 700px;
  margin-top: 0.25rem;
}

header nav {
  top: 75px;
}

.bnr {
  display: block;
   margin: 3rem auto 0;
	width: 60%;
}

@media screen and (max-width: 800px) {
  .main {
    height: 350px;
  }
  header nav {
    display: none;
	      top: 50px;
    padding-bottom: 100%;
  }
	.bnr {
		margin: 0 auto 0;
		width: 100%;
	}
}