style.css

*{
    margin: 0px;
    padding: 0px;
}


body{
    background-color:rgb(166, 137, 100);
    height: 100vh;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.calculator{
    height: 524px;
    width: 424px;
    background-color:black;
    display: flex;
    flex-direction: column;
    padding:15px;
    padding-top: 20px;
    border-radius: 20px;
}

.display{
    background-color:rgb(118, 116, 116);
    width: 424px;
    height: 110px;
    border-radius: 5px;
    font-size: 80px;
    font-family: monospace;
    text-align: right;
}

.buttons{
    display: flex;
    width: 424px;
    margin-top: 10px;
    flex-direction: column;
}

.row1,.row2,.row3,.row4,.row5{
    display: flex;
    flex-direction: row;
}

button{
    height: 80px;
    font-size: 26px;
    font-family: monospace;
    border-radius: 5px;
    width: 100px;
    flex-grow: 1;
    border: 1px solid black;
}

.AC,.zero{
    flex-grow: 18;
}

.digit{
    background-color: #238082;
}

.digit:active{
    background-color: #6c8f8f;
}


.equalto{
    background-color:#be6812;
}

.equalto:active{
    background-color: #ffc183;
}

.spl{
    background-color:#175594;
}

.spl:active{
    background-color:#6d8dae;
}


.operator {
    background-color: #be6812;
}

.operator:focus {
    background-color:#ffc183;
}