.marquee {
            width: 100%;
            height: 31px;
            line-height: 27px;
            background-color: #000000;
            white-space: nowrap;
            overflow: hidden;
            box-sizing: border-box;
        }

            .marquee h3 {
                font-size: 15px;
                color: #f5f5f5;
                display: inline-block;
                padding-left: 100%;
                animation: marquee 30s linear infinite;
            }

        @keyframes marquee {
            0% {
                transform: translate(0, 0);
            }

            100% {
                transform: translate(-100%, 0);
            }
        }