MediaWiki:Common.css

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/* CSS placed here will be applied to all skins */

.blinking-header {
    font-size: 24px;
    font-weight: bold;
    color: #ff0000;
    animation: blink-animation 1s steps(5, start) infinite;
    text-align: center;
    margin-top: 20px;
}

@keyframes blink-animation {
    to {
        visibility: hidden;
    }
}