@import url('https://fonts.googleapis.com/css?family=Muli&display=swap');

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

body {
  background-color: #686de0;
  font-family: 'Muli', sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
}

.container {
  background-color: #fff;
  border-radius: 10px;
  padding: 50px 20px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, .1),
              0 6px 6px rgba(0, 0, 0, 0.1);
  width: 500px;
  max-width: 100%;
  text-align: center;
}

h3 {
  margin: 0;
  letter-spacing: 2px;
  opacity: .5;
}

.joke {
  font-size: 1.6rem;
  line-height: 2rem;
  margin: 50px auto;
  max-width: 450px;
}

.btn {
  background-color: #9f68e0;
  border: 0;
  border-radius: 10px;
  padding: 14px 40px;
  font-size: 16px;
  color: #fff;
  outline: none;
  cursor: pointer;
  box-shadow: 0 10px 20px rgba(0, 0, 0, .1),
  0 6px 6px rgba(0, 0, 0, 0.1);
}

.btn:active {
  transform: scale(.98);
}

@media screen and (max-width: 500px) {
  .container {
    width: 90%;
    min-width: 300px;
    margin: auto;
  }
}