body{
  margin: 0px;
  padding: 0px;
  color: #EDF2F4;
  background-color: hsl(167, 23%, 16%);
  text-align: center;
}
h1{
  font-size: 50px;
}
button{
  width: 90px;
  height: 70px;
  font-size: 45px;
  border-radius: 50px;
  margin: 5px;
  transition: 0.3s;
  padding: 10px;
}
button:hover{
   background-color: #FFE66D;
  color: white;
  cursor: pointer;
  transform: scale(1.1);
  border-color: black;
}
.text{
  width: 360px;
   padding: 15px 45px 15px 15px;
   border-radius: 15px; 
   font-size: 45px;
   background-color: #8D99AE;
   outline: none;
}
.backspace{
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 30px;
  color: whitesmoke;
  transition: 0.3s;
  cursor: pointer;
}
.backspace:hover{
  color: red;
}
.input-box{
  position: relative;
  width: 425px;
  margin: auto;
}
.input-box .text{
  padding: 15px 45px 15px 15px;
  border-radius: 15px;
}
.symbol{
  background-color: #40916C;
  color: #EDF2F4;
}
.zero{
  width: 180px;
}
.eval{
  background-color: #52B788;
  color: #EDF2F4;
}
.clear{
  background-color: #EF233C;
}