styles.css

.ticker--outer {
    width:100%;
    padding: 40px;
    box-sizing: border-box;
}

.ticker--inner {
    background-color: #CCC;
    padding: 10px;
}

.ticker--controls {
    width: inherit;
    margin-top: 40px;
    text-align:center;
}

.ticker {
    margin: 0 auto;
    padding: 20px;
    white-space: nowrap;
    overflow: hidden;
}

.ticker--mlb {
    background-color: rgba(0,0,0,.5);
    color: #FFF;
}

.ticker--nfl {
    background-color: rgba(255,255,255, 1);
}

.ticker--mlb span {
    display: inline-block;
    padding-left: 1000px;
    animation: ticker--scroll 20s linear infinite;
}

.ticker--nfl span {
    display: inline-block;
    padding-left: 1100px;
    animation: ticker--scroll 35s linear infinite;
}

.ticker--nfl span:hover, .ticker--mlb span:hover  {
    cursor: pointer;
    -moz-animation-play-state: paused;
    -webkit-animation-play-state: paused;
    animation-play-state: paused;
}

@keyframes ticker--scroll {
    0%   { transform: translate(0, 0); }
    100% { transform: translate(-100%, 0); }
}

button {
    border-radius: 4px;
    padding: 20px;
    cursor: pointer;
}

button:hover {
    background-color: rgba(0,0,0,.1);
}

.btn--stop {
    background-color: rgba(255,0,0,.3);
    color: #FFF;
}

.btn--stop:hover {
    background-color: rgba(255,0,0,1);
    color: #000;
}

.mr-32 {
    margin-right: 32px;
}