body {
    font-family: Arial;
    color: #333;
    background-color: #efefef;
}

#container {
    width: 800px;
    margin: auto;
    background-color: #fff;
    padding: 20px;
}

form {
    width: 800px;
    margin: auto;
    background-color: darkgrey;
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 20px;
}

input {
    display: block;
    background-color: white;
    color:crimson;
    border: none;
    text-align: center;
    width:100%;
    aspect-ratio: 1/1;
    font-size: 75px;
}