* {
  padding: 0;
  margin: 0;
}
html {
  font-size: 62.5%;
}
body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background-color: rgb(51, 84, 84);
}

.calculator {
  background-color: rgb(211, 211, 211);
  padding: 2rem;
  border-radius: 1rem;
}

.screen {
  width: 22.4rem;
  background-color: rgb(176, 205, 176);
  font-size: 4rem;
  padding: 0.4rem;
  overflow-x: scroll;
}
.buttons {
  width: 23.4rem;
  display: flex;
  flex-wrap: wrap;
}

button {
  background-color: rgb(131, 129, 129);
  border: none;
  color: rgb(255, 255, 255);
  border-radius: 2.5rem;
  width: 5rem;
  height: 5rem;
  margin: 0.4rem;
}
button:hover {
  background-color: rgb(111, 110, 100);
}
button:active {
  background-color: rgb(232, 232, 232);
}
#equals {
  background-color: rgb(218, 2, 2);
}

#equals:hover {
  background-color: rgb(198, 1, 1);
}
#clear {
  width: 100%;
  background-color: rgb(252, 226, 27);
  font-size: 3rem;
  border-radius: 1.9rem;
  display: flex;
  justify-content: center;
}

#clear:hover {
  background-color: rgb(252, 201, 72);
}