<div class="neon">
  <span class="text" data-text="thanks">thanks</span>
  <span class="gradient"></span>
  <span class="spotlight"></span>
</div>

body {
    margin: 0;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: black;
}

.neon {
    position: relative;
    overflow: hidden;
    filter: brightness(200%);
}

.text {
    background-color: black;
    color: white;
    font-size: 180px;
    font-weight: bold;
    font-family: sans-serif;
    text-transform: uppercase;
    position: relative;
    user-select: none;
}

.text::before {
    content: attr(data-text);
    position: absolute;
    color: white;
    filter: blur(0.02em);
    mix-blend-mode: difference;
}

.gradient {
    position: absolute;
    background: linear-gradient(45deg, red, gold, lightgreen, gold, red);
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    mix-blend-mode: multiply;
}

.spotlight {
    position: absolute;
    top: -100%;
    left: -100%;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(
            circle,
            white,
            transparent 25%
        ) center / 25% 25%,
        radial-gradient(
            circle,
            white,
            black 25%
        ) center / 12.5% 12.5%;
    animation: light 5s linear infinite;
    mix-blend-mode: color-dodge;
}

@keyframes light {
    to {
        transform: translate(50%, 50%);
    }
}