* {
  box-sizing: border-box;
}

h1,
h2 {
  margin: 0;
}

body {
  margin: 0;
  padding: 0;
  font-family: "Open Sans", sans-serif;
}

.page {
  margin: 0 auto;
  height: 100vh;
  max-width: 1200px;
  padding: 0 1em;
}

header {
  padding: 0.5em 0;
  margin-bottom: 2rem;
  border-bottom: 2px solid #e8e8e8;
}

.main-content {
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

h2 {
  padding-bottom: 0.5em;
  margin-bottom: 1em;
  border-bottom: 2px solid #e8e8e8;
}

.settings {
  display: flex;
  flex-direction: column;
  gap: 1em;
  margin: 0 auto;
}

.settings-slider {
  display: grid;
  grid-template-columns: 140px auto 100px;
  column-gap: 1em;
}

.actions {
  margin: 2em 0;
  height: 3em;
  display: flex;
  gap: 1em;
  justify-content: center;
}

.actions > * {
  padding: 0 2em;
}

canvas {
  display: block;
  margin: auto;
}

.error {
  border-radius: 5px;
  background-color: #ffdddd;
  border: 1px #cc2222 solid;
  color: #cc2222;
  padding: 1em;
  margin: 1em 0;
}

.error-header {
  font-weight: bold;
  font-size: large;
}