* {
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
}

body {
    display: flex;
    align-items: center;
    flex-direction: column;
}

.display {
    display: flex;
    background-color: black;
    padding: 20px;
    border-radius: 20px 20px 0 0;
    justify-content: center;
    width: 300px;
    box-sizing: border-box;
}

.numbers {
    display: flex;
    align-self: center;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    background-color: grey;
    width: 300px;
    padding: 10px 0 10px 0;
    border-radius: 10px;
}

.keys {
    display: flex;
    width: 300px;
    height: 310px;
    box-sizing: border-box;
}

.numeric {
    display: flex;
    background-color: rgb(152, 229, 255);
    flex-grow: 3;
    border-radius: 0 0 0 20px;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.operations {
    flex-grow: 1;
    background-color: rgb(255, 139, 255);
    border-radius: 0 0 20px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding-bottom: 4px;
}

.numeric {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.set {
    flex-shrink: 1;
}

button {
    height: 40px;
    width: 40px;
    border-radius: 50%;
    border: none;
    font-size: 20px;
    color: black;
}

.set button {
    height: 60px;
    width: 60px;
    font-size: 30px;
}

.four {
    font-family: sans-serif;
}