*{
    padding: 0px;
    margin:0px;
    box-sizing: border-box;
}

body{
    background-color:tomato;
    color:whitesmoke;
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
}

h1{
    padding: 10px;
    color:whitesmoke;
    background-color: teal;
}

h2{
    padding: 10px;
    margin-top: 20px;
    text-decoration: underline;
}

#codes{
    font-weight: bolder;
    color:rgb(22, 37, 70);
    font-size: 150px;
    padding: 20px;
    margin:0 auto;
}


.input-cont{
    padding: 0 3em 3em 3em;
}

.userInput{
    border: none;
    outline: none;
    background-color: none;
    font-size: 5em;
    font-weight: 900;
    text-align: center;
    width:2em;
    height:2em;
    background-color: whitesmoke;    
}