body{
    margin:0;
    display: flex;
    justify-content: center;
    align-items: center;
    padding-top: 5%;
}



.calculator {
    display: flex;
    flex-direction: column;
    align-items: center;
    content: center;
    width: 250px;
    height: 400px;
    background-color: #f0e7d5;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}



#display{
    width: 200px;
    height:50px ;
    justify-content: center;
    align-items: center;
   margin-top: 10%; 
   border: none; 
   border-radius: 5px; 
   background-color: #383734; 
   font-size: 18px; 
   text-align: right;
    padding-right: 10px;
    color: white;
    font-size: 30px;
    
}


#key{
    display: grid;
    grid-template-columns: repeat(4, auto); /* size columns to content */
    gap: 6px; /* reduce gap between items */
    justify-content: center; /* center the grid in container */
    align-items: center;
    padding-top: 10%;
}


button {
    background-color: black;
    color: #f0e7d5;
    width: 50px;
    height: 50px;
    padding: 3px;
    border-radius: 50px;
    border: none;
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
 
}
button:hover {
    background-color:rgb(114, 110, 110);
    color:#f0e7d5;
}