.txtKod {
    width: 122px;
    padding: 12px;
    box-sizing: border-box;
    font-size: 18px;
    text-align: left;
    letter-spacing: 6px;
    margin: 15px 0;
    border: 1px solid #3f5d79;
}

    .txtKod:focus {
        outline: none;
        background-color: lightyellow;
    }

.progress-container {
    width: 100%;
    height: 8px;
    background: #ddd;
    border-radius: 5px;
    overflow: hidden;
}

#progressBar {
    height: 100%;
    width: 100%;
    background: #3f5d79;
    transition: width 1s linear;
}

#countdownText {
    margin: 8px 0 15px;
    font-size: 14px;
    color: #555;
}