.container {
    display: flex;
    border: 1px black;
    border-style: double;
    width: 428px;
    height: 600px;
    flex-wrap: wrap;
    font-family: arial;
}

#display {
    display:flex;
    border: 1px black;
    border-style: groove;
    width: 426px;
    height: 98px;
    justify-content: right;
    align-items: center;
    font-size: 60px;
}

#clear {
    display:flex;
    border: 1px black;
    border-style: groove;
    width: 214px;
    height: 100px;
    justify-content: center;
    align-items: center;
    font-size: 40px;
}

.button {
    display: flex;
    border: 1px black;
    border-style: groove;
    width: 107px;
    height: 100px;
    justify-content: center;
    align-items: center;
    font-size: 50px;
}