.scroll-left {
    height: 50px;
    overflow: hidden;
    position: relative;
    background: yellow;
    color: orange;
    border: 1px solid orange;
}

    .scroll-left p {
        position: absolute;
        width: 100%;
        height: 100%;
        margin: 0;
        line-height: 50px;
        text-align: center;
        /* Starting position */
        -moz-transform: translateX(100%);
        -webkit-transform: translateX(100%);
        transform: translateX(100%);
        /* Apply animation to this element */
        -moz-animation: scroll-left 25s linear infinite;
        -webkit-animation: scroll-left 25s linear infinite;
        animation: scroll-left 25s linear infinite;
    }
/* Move it (define the animation) */
@-moz-keyframes scroll-left {
    0% {
        -moz-transform: translateX(100%);
    }

    100% {
        -moz-transform: translateX(-100%);
    }
}

@-webkit-keyframes scroll-left {
    0% {
        -webkit-transform: translateX(100%);
    }

    100% {
        -webkit-transform: translateX(-100%);
    }
}

@keyframes scroll-left {
    0% {
        -moz-transform: translateX(100%); /* Browser bug fix */
        -webkit-transform: translateX(100%); /* Browser bug fix */
        transform: translateX(100%);
    }

    100% {
        -moz-transform: translateX(-100%); /* Browser bug fix */
        -webkit-transform: translateX(-100%); /* Browser bug fix */
        transform: translateX(-100%);
    }
}