body {
  background-color: var(--site-bg) !important;
}

.site-header .custom-logo {
  width: 10vw;
  min-width: 180px;
  max-width: 350px;
  color: transparent;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

#header-background-wrapper {
  position: relative;
  width: 100%;
  height: 20vh;
  overflow: hidden;
}

#header-background-image {
  width: 100%;
  height: 100%;
}

#header-background-image > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

#header-background-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.18);
  text-align: center;
}

#header-background-overlay > h1 {
  font-family: "Noto Serif JP", serif;
  font-size: 1.8rem;
  text-shadow: #777 0 0 5px;
  color: white;
  position: absolute;
  top: 50%;
  transform: translate(0, -50%);
  width: 100%;
  margin: 0;
}

@media screen and (min-width: 64em) {
  #header-background-overlay > h1 {
    font-size: 2.5rem;
  }
}

.site-content {
  flex-grow: 1;
  margin-top: 3rem !important;
  margin-bottom: 3rem !important;
}

.content__main {
  padding: 2rem !important;
}