tabletop-companion/app/assets/stylesheets/layout.css

* {
  box-sizing: border-box;
}

body {
  font-size: 1.1em;
  background-color: var(--background-color);
  min-width: 30em;
}

main {
  background: linear-gradient(180deg, rgba(227,220,190,1) 0%, rgba(255,248,238,1) 100%);
  max-width: 80vw;
  display: flex;
  flex-direction: column;
  padding: 1em;
  margin: 0 auto;
  min-height: calc(100vh - var(--header-height));
}

aside.flash {
  background-color: var(--notice-bg-color);
  color: var(--notice-text-color);
  padding: 1em;
  border-radius: var(--border-radius);
}

aside.alert {
  background-color: var(--invalid-alert);
}

section.inset {
  width: 70%;
  max-width: 60em;
  background-color: var(--inset-bg-color);
  border-radius: var(--border-radius);
  padding: 1em;
  margin: 0 auto;
}

h1, h2 {
  text-align: center;
}

header {
  background: linear-gradient(180deg, rgba(34,45,113,1) 0%, rgba(22,90,157,1) 100%);
  position: relative;
  padding: 0 50px;
  margin-right: 2em;
  height: var(--header-height);
}

/* Angled banner end */
header:before {
  content: "";
  width: 0;
  height: 0;
  border-top: calc(var(--header-height) / 2) solid transparent;
  border-bottom: calc(var(--header-height) / 2) solid transparent;
  border-right: calc(var(--header-height) / 2) solid var(--background-color);
  position: absolute;
  right:0;
}

header h1 {
  padding: 1em 0;
}

header h1 a:link, header h1 a:visited {
  color: var(--header-text-color);
  text-decoration: none;
}

header nav {
  ul {
    display: flex;
    justify-content: center;
  }
  li {
    list-style-type: none;
    padding: 0 .5em;
  }
  a:link, a:visited {
    background-color: var(--button-bg-color);
    color: var(--button-text-color);
    border-radius: var(--border-radius);
    text-decoration: none;
    padding: .5em;
  }
  a:hover {
    background-color: var(--button-hover-bg-color);
    color: var(--button-hover-text-color);
  }
}

hr {
  width: 100%;
}