body{
    background-color: rgb(207, 199, 195);
}

.heading {
    text-align: center;
    color: #1512e3;
    margin-top: 20%;
}
.container{
    width: 250px;
    height: 400px;
    margin: 80px auto;
    border-radius: 10px;
    background-color: rgb(214, 214, 214);
    box-shadow: 5px 5px 1px #b6a9a9,
    -5px -5px 10px #b6a9a9, -5px -5px 10px #ffffff;
}
.calculator-box{
    width: 200px;
    margin: 20px auto;
}
#display {
    border: none;
    outline: none;
    color: #000;
    background: transparent;
    text-align: right;
    font-weight: 600;
    padding: 15px;
    margin: 30px 0 20px 0;
    box-shadow:  inset 2px 2px 5px #fbfbfb, inset -5px -5px 10px #ffffff;
}
.button{
    margin: 15px 0 0 5px;
    border: none;
    outline: none;
    font-size: 18px;
    font-weight: bold;
    width: 42px;
    height: 42px;
    border-radius: 19%;
    cursor: pointer;
    background-color: rgb(195, 174, 174);
    box-shadow: 5px 5px 10px #b6acac, -5px -5px 10px #faf4f4;
    display: inline-block;
}

.button:active{
    box-shadow: inset 1px 1px 2px #1512e3 , inset -1px -1px 2px #ffffff;
}

.clearButton{
    color: 
    white;
    background-color: rgb(23, 209, 23);
}
.operatorButton{
    color: white;
    background-color: #ff0000;
}

.brandName{
    color: #ff0000;
    text-align: center;
    font-family: Georgia, 'Times New Roman', Times, serif;
}