body {
    padding: 0;
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}



.calculator {
    font-family: 'Oxygen';
    padding: 20px 15px;
    border-radius: 2px;
    box-shadow: rgba(0, 0, 0, 0.25) 0px 25px 50px -12px;
}

.calc-row div.screen {
    font-family: 'Courier New', monospace;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    width: 290px;
    font-size: 2em;
    padding: .25em 5px;
    color: #333;
    height: 80px;
    margin-bottom: 20px;
}

span.total {
    padding-right: 30px;
}

.calc-row {
    display: flex;
}

.calc-row div {
    display: flex;
    text-align: center;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    margin: 5px;
    background-color: #eee;
    width: 50px;
    height: 50px;
}

.calc-row div:hover {
    cursor: pointer;
}

.calc-row div.equal {
    width: 110px;
}

.button, .screen {
    border-radius: 2px;
    box-shadow: rgba(0, 0, 0, 0.05) 0px 6px 24px 0px, rgba(0, 0, 0, 0.08) 0px 0px 0px 1px;
}

.button:hover {
    box-shadow: rgba(50, 50, 93, 0.25) 0px 50px 100px -20px, rgba(0, 0, 0, 0.3) 0px 30px 60px -30px, rgba(10, 37, 64, 0.35) 0px -2px 6px 0px inset;
    transform: scale(1.1);
}