pressbooks-aldine/resources/assets/styles/layouts/_header.scss

.banner {
  background: url('../images/banner-one.jpg');
  background-repeat: no-repeat;

  .container {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 1435px;
    height: 560px;
  }

  .toggle-menu {
    display: block;
    position: absolute;
    top: 30px;
    right: 17px;
    z-index: 99;
    text-indent: -9999em;
    width: 25px;
    height: 20px;

    .icon {
      display: block;
      position: absolute;
      top: 7px;
      width: 25px;
      height: 3px;
      background: $brand-primary;

      &::before,
      &::after {
        content: '';
        width: 25px;
        height: 3px;
        background: $brand-primary;
      }

      &::before {
        position: absolute;
        top: -7px;
        right: 0;
      }

      &::after {
        position: absolute;
        top: 7px;
        right: 0;
      }
    }

    &.is-active .icon {
      background: $white;

      &::before,
      &::after {
        background: $white;
      }
    }
  }

  .primary-navigation {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    margin-top: 30px;
    padding: 0 17px;

    a {
      font-family: Karla, sans-serif;
      font-size: 24px;
      color: $white;
      letter-spacing: 0;
      line-height: 80px;
      text-decoration: none;
      display: none;

      &.brand {
        display: block;
        width: 109px;
        height: 17px;
        align-self: flex-start;
        background-image: url('../images/logo.png');
        background-size: 109px 17px;
        text-indent: -9999em;
      }
    }

    &.is-visible {
      position: absolute;
      z-index: 1;
      background: $brand-primary;
      justify-content: center;
      height: 560px;
      top: 0;
      margin-top: 0;
      padding: 0 52px;

      a {
        display: block;
        width: 100%;
        border-bottom: solid 1px $white;

        &:last-child {
          border-bottom: 0;
        }

        &.brand {
          display: none;
        }
      }
    }
  }

  .branding {
    display: flex;
    height: 364px;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
  }
}

.banner h1 {
  text-align: center;

  a {
    text-decoration: none;
  }
}

.banner h2 {
  text-align: center;
}

@media (min-width: $medium) {
  .banner nav {
    width: auto;
    display: flex;

    a {
      font-size: 18px;
    }
  }

  .banner .catalog-navigation {
    justify-content: flex-start;
  }

  .banner .meta-navigation {
    justify-content: flex-end;
  }

  .banner h1 {
    font-size: 72px;
    letter-spacing: 1.8px;
    line-height: 40px;
    margin-bottom: 0.5em;
  }

  .banner h2 {
    font-size: 30px;
    letter-spacing: 0.75px;
    line-height: 40px;
  }
}