body {
    background-color: #181818;
    color: #b7d8ff;
    font-family: Arial, Helvetica, sans-serif;
    overflow-x: hidden;
}

.header {
    text-align: center;
    padding-top: 50px;
}

.header-text {
    display: inline-block;
    font-weight: bolder;
    font-size: 22px;

    color: #b7d8ff;
    animation: headerPulse 4s ease-in-out infinite;
    transform-origin: center;
}

@keyframes headerPulse {
    0% {
        color: #b7d8ff;           /* light blue */
        transform: scale(1);
    }
    50% {
        color: #4c76ba;           /* darker/bright phase */
        transform: scale(1.4);    /* 40% larger */
    }
    100% {
        color: #b7d8ff;           /* back to light blue */
        transform: scale(1);
    }
}