#container {
    background-color: white;
}

#back-button {
    color: #34c759;
    margin-bottom: 0;
}

#input {
    max-width: 32dvh;
    overflow: hidden;
    margin: auto;
    font-size: 4dvh;
    color: white;
}

#keypad {
    margin: auto;
    display: grid;
    grid-template-columns: repeat(3, auto);
    justify-content: center;
}

#keypad>span {
    height: 9dvh;
    width: 9dvh;
    margin: 1.5dvh;

    background-color: #e5e5ea;
    border-radius: 50%;

    vertical-align: bottom;
    text-align: center;

    overflow: hidden;
}

#keypad>span>div:first-child {
    margin-top: .6dvh;
    font-size: 4.5dvh;
}

#keypad>span>div:nth-child(2) {
    font-size: 1.4dvh;
    font-weight: bold;
    margin-top: -.5dvh;
}

#keypad>span:nth-child(10)>div {
    margin-top: 1.7dvh;
    font-size: 6.5dvh;
}

#keypad>span:nth-child(11)>div:nth-child(2) {
    margin-top: -1dvh;
    font-size: 2dvh;
}

#keypad>span:nth-child(12)>div {
    margin-top: 1.4dvh;
}

#keypad>span:nth-child(14) {
    background-color: #34c759;
    color: white;
}

#keypad>span:nth-child(14)>div {
    margin-top: 2dvh;
}

#keypad>span:nth-child(14)>div>span {
    font-size: 5dvh;
}

#keypad>span:nth-child(15)>div {
    margin-top: 1.8dvh;
    margin-right: .5dvh;
}

#keypad>span:nth-child(15)>div>span {
    font-size: 4dvh;
}

#keypad>span:nth-child(13),
#keypad>span:nth-child(15) {
    background-color: white;
}

#tray {
    display: flex;
    justify-content: space-evenly;
    margin: 0 0 2dvh;
}

#tray>div {
    text-align: center;

    cursor: pointer;
}

#tray>div>span {
    font-size: 3dvh;
}

#tray>div>div {
    font-size: 1.8dvh;
}

#tray>div:nth-child(2) {
    color: #007aff
}