.header {
    padding: 10px;
    font-size: 70px;
}

.button-container-super {
    display: flex;
    flex-direction: row;
    border: 2px solid black;
    height: 550px;
    width: 340px;
}
#display {
    min-height: 100px;
    width: 328px;
    border: 1px solid black;
    align-content: center;
    justify-content: center;
    margin: 5px;
}
.num-button {
    margin: 5px; 
    height: 100px;
    width: 100px;
    border-radius: 100px;
}

.button-container-operators {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    margin: 5px;
}

.operator {
    height: 70px;
    width: 70px;
}