* {
  font-family: sans-serif;
  color: #fff;
  margin: 1px;
}
body {
  background: #245D8D;
}
h1 {
  position: absolute;
  left: 50%;
  transform: translate(-50%,0);
}
button {
  border-radius: 10px;
  background: #3395BE;
  border: solid #14315C;
  width: 150px;
  height: 60px;
}
.calculator {
  border-radius: 40px;
  background: #83D3D8;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%,-50%);
  width: 680px;
  height: 400px;
}
#calculator {
  width: 700px;
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translate(-50%,0);
}
input {
  border-radius: 10px;
  font-size: 30px;
  color: black;
  border: solid #14315C;
  height: 60px;
  width: 600px;
}