Submitted solutions for "007 World"

Wouter Raateland

@keyframes leftRight {
        from { transform: translate(-50%, -50%) translate(-3em, 0); }
        to { transform: translate(-50%, -50%) translate(3em, 0); }
}

.box {
        background-color: #000;
        color: #fff;
}

.box::before {
        content: 'Hello World';
}

.box::after {
        content: '';

        position: absolute;
        left: 50%; top: 50%;

        width: 1.5em;
        height: 1.5em;
        border-radius: 100%;

        background-color: #fff;
        mix-blend-mode: difference;

        animation: leftRight 3s linear infinite;
        animation-direction: alternate;
}