main {
  max-width: 768px;
  width: 100%;
  margin: 0 auto;
  margin-top: 4.5rem;
}

/* HEADER */
header {
  background: #fff;
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  max-width: 768px;
  width: 100%;
  z-index: 999;
}
header .logo_wrap {
  position: relative;
}
header .logo_wrap a {
  width: fit-content;
  display: block;
  padding: 1.5rem;
}
header .logo_wrap a h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #7b3f8a;
  letter-spacing: -.1rem;
  background: url("../img/logo.png") no-repeat 0 50% / 1.2rem;
  padding-left: 1.8rem;
}
header .logo_wrap .menu_landing {
  position: absolute;
  top: 50%;
  right: 1.5rem;
  transform: translateY(-50%);
  background: url("../img/menu.svg") no-repeat 50% 50% / 1.1rem;
  width: 3rem;
  height: 2rem;
  border: 1px solid #ddd;
  border-radius: .3rem;
}
header nav {
  display: none;
  border-top: 1px solid #ddd;
  border-bottom: 1px solid #ddd;
  padding: 1.5rem;
  background: #f9fafd;
}
header nav ul {
  display: flex;
  flex-direction: column;
  gap: 1.3rem;
  text-align: center;
}
header nav ul li a {
  font-size: 1.15rem;
}
header nav ul li.on a {
  font-weight: 700;
  color: #723182;
}

/* FOOTER */
footer {
  background: #666;
  padding: 2rem 1.5rem;
  text-align: center;
  max-width: 768px;
  width: 100%;
  margin: 0 auto;
}
footer p {
  font-size: .9rem;
  color: #fff;
  line-height: 1.4;
}
footer .copyright {
  margin-top: 1rem;
}