body{
    border: 1px solid black;
}

#head{
    display: flex;
    justify-content: flex-end;
    background-color:rgb(176, 248, 117);
    justify-content: center ;
    
}
.container{
  
    background-color: rgb(194, 235, 235);
    width: 100%;
    height: 900px;
    display: flex;
    justify-content: center;
    
}

.calcu{
 
    height: 505px;
    width: 404px;
    background-color: rgb(204, 106, 106);
    margin-top: 100px;
    border: 4px solid rgb(0, 0, 0);
    border-radius: 3%;
   
    
}
button {
  background-color: #222;
  border-radius: 4px;
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  padding: 5px 5px 5px;
  width: 75px;
  margin: 3px;
}

button:hover,button:focus {
  opacity: .75;
}
#divdisplay{
    width: 100%;
    height: 120px;

}
#divnum{
    
    height: 380px;
    width: 100%;    
    display: grid;
    grid-template-columns: 25% 25% 25% 25%;
    grid-template-rows: 1fr 1fr 1fr 1fr ;
    gap: 5px 1px;
    
    padding-left: 10px;

}
#display{
    width: 90%;
    height: 50px;
    margin: 10px;
    margin-top: 15px;
    border: 1px solid black;
    border-radius: 2vh;
    font-size: 30px;
    padding: 5px 10px;
    font-weight: 400;
    background-color: rgb(187, 186, 184);
}
#btnclr{

    
    width: 300px ;
}