body {
    background: #000;
    color: #0ff;
    font-family: "Courier New", monospace;
    padding: 40px;
}

p {
    margin: 10px 0;
    position: relative;
    animation: wave 4s infinite alternate;
}

p:nth-child(even) {
    animation-delay: 2s;
}

@keyframes wave {
    from {
        left: -30px;
    }

    to {
        left: 30px;
    }
}