.card[data-label]:not([data-label=''])::before {
    content: ""; 
    position: absolute;
    top: 10px;
    left: 10px;
    width: 30px; 
    height: 30px; 
    background-color: #7bf5e9;
    border-top-left-radius: 2px;
    border-bottom-left-radius: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 11;
    background-image: url(/img/icon/favicon-16x16.png);
    background-repeat: no-repeat;
    background-position: center;
    background-size: 16px 16px;
}

.card[data-label]:not([data-label=''])::after {
    content: "Promo code: " attr(data-label); 
    position: absolute;
    top: 10px;
    left: 40px;
    height: 30px;
    padding: 0 10px;
    background-color: #141414; 
    color: white;
    font-weight: bold;
    font-size: 12px;
    display: flex;
    align-items: center;
    border-top-right-radius: 2px;
    border-bottom-right-radius: 2px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); 
    z-index: 10;
    border: 1px solid #cccccc6b
}


@keyframes glow {
    0%, 100% {
        text-shadow: 0 0 5px rgba(0, 161, 225, 1), 0 0 10px rgba(0, 161, 225, 1), 0 0 15px rgba(0, 161, 225, 1);
    }
    50% {
        text-shadow: 0 0 20px rgba(0, 161, 225, 1), 0 0 30px rgba(0, 161, 225, 1), 0 0 40px rgba(0, 161, 225, 1);
    }
}

header[data-campaign]:not([data-campaign=""]):nth-of-type(1)::before {
    content: attr(data-campaign);
    display: block;
    width: 100%;
    padding: 15px;
    background: black;
    color: #fff;
    font-size: 1.5em;
    font-weight: bold;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1px;
    animation: glow 3s ease-in-out infinite;
    position: fixed;
    bottom: 0;
    z-index: 99999;
}


@media only screen and (max-width: 40em) {
    header[data-campaign]:not([data-campaign=""]):nth-of-type(1)::before {
        font-size: 1.15em;
        line-height: 1.3rem;
        padding: 10px;
    }
}