SOURCE

<div data-text="Hello World"></div>

div {
    width: 600px;
    height: 200px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 40px;
    background: linear-gradient(45deg, #000 50%, #fff 50%);

    
}

div::after {
    display: block;
    content: attr(data-text);
    font-size: 40px;
    color: #fff;
    transform: translateX(-100px);
    mix-blend-mode: difference;
    animation: move 3s ease infinite;
}

@keyframes move {
    0%, 100% {
        transform: translateX(-100px);
    }

    50% {
        transform: translateX(100px);
    }
}