.operatorbtn{
    background-color:rgb(123, 54, 8);
}

.operatorbtn:hover{
    background-color:rgb(204, 126, 74);
}

.operatorbtn:active{
    background-color:rgb(238, 197, 169);
}


body{
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color:rgb(255, 245, 245);
}

#calculator{
    font-family: Arial, sans-serif;
    background-color: rgb(32, 32, 32);
    border-radius: 15px;
    max-width: 500px;
    overflow: hidden;
}

#display{
    width: 100%;
    padding: 20px;
    font-size: 5rem;
    text-align: left;
    border: none;
    color:rgb(255, 255, 255);
    background-color: rgb(52, 52, 52);
}


#keys{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    padding: 25px;
}

button{
    width: 100px;
    height:100px;
    border-radius: 50px;
    border: none;
    background-color: rgb(142, 0, 0);
    color: white;
    font-size: 3rem;
    font-weight: bold;
    cursor: pointer;

}

button:hover{
    background-color:rgb(255, 0, 0);
}

button:active{
    background-color:rgb(235, 126, 126)
}