@import url('https://fonts.cdnfonts.com/css/calculator');
  body{
    background-color: gray;   
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
  }

button{
    height: 50px;  
    width: 50px;
    font-size: 1.5rem;
}
.calculator{
  /* border: 2px solid black; */
  padding: 5px;
  background-color: blueviolet;
}
p{
  text-align: center;
  background-color: aqua;
  padding: 20px;
  font-family: 'Calculator', sans-serif;
  font-weight:900;
}