tfa.scss

.tfa-app-code {
    code.qr {
        display: none;
    }
    .qrcode img {
        margin: auto;
        width: 40%;
        max-width: 50vw;
    }
}

form.default {
    .tfa-code-input {
        text-align: center;
        .tfa-code-wrapper {
            border: 1px solid $base-gray;
            display: inline-block;
            font-size: 2em;
            line-height: 2em;
            margin: 0.5em 0;
        }

        input[type="number"] {
            background: $dark-gray-color-10;
            border: 0;
            box-sizing: unset;
            font-family: monospace;
            height: 1em;
            min-width: 0;
            width: 1.5ex;
            margin: 0;
            padding: 0.5em 0.25em;
            text-align: center;
            vertical-align: top;

            color: $base-gray;
            &:focus {
                background-color: $activity-color-20;
                color:$black;
                outline: 0;
            }
            &:invalid {
                box-shadow: none;
                color: $base-gray;
                outline: 0;
            }

            &:nth-child(3) {
                margin-right: 0.5em;
            }

            // Hide spinner elements
            -moz-appearance: textfield;

            &::-webkit-outer-spin-button,
            &::-webkit-inner-spin-button {
                /* display: none; <- Crashes Chrome on hover */
                -webkit-appearance: none;
                margin: 0; /* <-- Apparently some margin are still there even though it's hidden */
            }
        }
    }
}