style.css

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
*::before,
*::after {
  box-sizing: border-box;
}
html,
body {
  font-size: 10px;
  font-family: 'lato', Arial, Helvetica, sans-serif;
}
body {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-end;
}
.container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin-bottom: 2rem;
}
.colors {
  font-size: 2.5rem;
  margin-bottom: 5rem;
}
.color {
  background: black;
  color: white;
  padding: 0.7rem 1rem;
  border-radius: 5rem;
  display: inline-block;
  width: 12rem;
  text-align: center;
}
.btn {
  border: none;
  cursor: pointer;
  background: transparent;
  font-size: 3rem;
}
.output {
  font-size: 1.7rem;
  background: black;
  color: white;
  border-radius: 0.5rem;
  padding: 3rem;
  width: 50rem;
  text-align: center;
}
.info {
  font-size: 3rem;
  margin-bottom: 10rem;
}