.running {
    width: 100%;
    overflow: hidden;
    white-space: nowrap;
    box-sizing: border-box;
}

.running-content {
    display: inline-block;
    animation: runningAnimation 20s linear infinite;
}

.running span {
    display: inline-block;
}

@keyframes runningAnimation {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-100%);
    }
}