* {
    box-sizing: border-box;
}

body {
    display: flex;
    background-color: white;
}

#instructions {
    display: none;
}

#die {
    display: none;
}

#errors {
    display: none;
}

#nucleotide-selector {
    display: none;
}

.genome>ol {
    display: inline-flex;
    flex-wrap: wrap;
    padding: 0;
    margin: 1ex;
}

.genome .nucleotide {
    display: inline-flex;
    height: 3ex;
    width: 2em;
    justify-content: space-around;
    align-items: center;
}

.genome .nucleotide.selected {
    border: 2px solid black;
}