#codeForm {
    text-align: center;
    margin: 0 auto;
    max-width: 1000px;
    font-size: 20px;
}

#codeForm h2 {
    font-weight: 300;
 
}

.shrinkable {
  transition: transform 100ms linear;
 
  border-radius: 10px;
  padding: .55rem;
  margin: 10px;
}

.shrinkable.shrink {
    transform: scale(0.9);
}

#code {
    transition: transform 100ms linear;
}

#code input {
    font-size: 50px;
    width: 70px;
    height: 70px;
    text-align: center;
   
    border-radius: 10px;
    margin: 8px;
}

#code input:active,
#code input:focus {
    outline: none;
    border: 1px solid gray;
}

#code input.error {
    border: 1px solid red;
}

#code input:disabled {
    color: #222;
    background-color: #FFFFFF;
}