.marquee {
    height: 20px;
    width: 268px;
    overflow: hidden;
    position: relative;
    white-space: nowrap;
}
.marquee div {
    height: 20px;
    display: block;
    overflow: hidden;
    position: absolute;
    padding-left: 100%;
    animation: marquee 10s linear infinite;
}
.marquee span {
    line-height: 20px;
}
@keyframes marquee {
    0%   { transform: translate(0, 0); }
    100% { transform: translate(-100%, 0); }
}