* {
  margin: 0px;
  padding: 0px;
  box-sizing: border-box;
}
body {
  font-family: cursive;
  background-blend-mode: difference;
  height: 100vh;
  width: 100vw;
  background-color: #1370cc;
  display: flex;
  justify-content: center;
  align-items: center;
}
.container {
  height: 10em;
  width: 20em;

  display: grid;
  flex-direction: column;
  justify-content: space-evenly;
}
button {
  background-color: black;
  color: white;
  width: 50%;
  height: 55%;
  text-align: center;
  border-radius: 40% 40% 40% 40%;
}