* {
  /* margin: 0; */
  /* padding: 0; */
  box-sizing: border-box;
}

body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}
header {
  min-height: 100px;
}
footer {
  min-height: 300px;
}
section {
  padding: 3rem;
  box-shadow: 4px 8px 16px rgba(0,0,0,0.1);
}
section ~ section {
  margin-top: 5rem;
}
.section-headline {
  margin: -0.5rem 0 3rem;
  text-align: center;
}
.description {
  margin-top: 3rem;
  max-width: 400px;
  line-height: 1.5;
}
code {
  font-size: 15px;
}

/* inputmode */
section.inputmode .description {
  margin-top: -1rem;
}
.inputmode-showcase code {
  display: inline-block;
  background-color: #333;
  color: #fff;
  padding: 3px 6px;
  border-radius: 4px;
}
section.inputmode input {
  display: inline-block;
  margin: 1rem 0;
}


/* * { outline: 2px dotted red }
* * { outline: 2px dotted green }
* * * { outline: 2px dotted orange }
* * * * { outline: 2px dotted blue }
* * * * * { outline: 1px solid red }
* * * * * * { outline: 1px solid green }
* * * * * * * { outline: 1px solid orange }
* * * * * * * * { outline: 1px solid blue } */