slider.css

.marquee {
    width: 30vw;
    height: 10vh;
    position: relative;
    background-color: #222;

display: -ms-flexbox;
	display: -webkit-flex;
	display: flex;

	-ms-flex-align: center;
	-webkit-align-items: center;
	-webkit-box-align: center;

	align-items: center;

    -webkit-border-radius: 5px;
    border-radius: 5px;
    -webkit-box-shadow: inset 0px 2px 2px rgba(0, 0, 0, .5), 0px 1px 0px rgba(250, 250, 250, .2);
    box-shadow: inset 0px 2px 2px rgba(0, 0, 0, .5), 0px 1px 0px rgba(250, 250, 250, .2);
}

.marquee a.news {  
    position: absolute;
    text-align: center;
    margin: auto;
    width:100%;
    color: #fff;
    text-shadow: 1px 1px 0px #000000;
    filter: dropshadow(color=#000000, offx=1, offy=1);
    transform:translateX(100%);
}

@keyframes left-one {
    0%  {
        transform:translateX(100%);
    }
    10% {
        transform:translateX(0);
    }
    40% {
        transform:translateX(0);
    }
    50% {
        transform:translateX(-100%);
    }
    100%{
        transform:translateX(-100%);
    }
}
@keyframes left-two {
    0% {
        transform:translateX(100%);
    }
    50% {
        transform:translateX(100%);
    }
    60% {
        transform:translateX(0);        
    }
    90% {
        transform:translateX(0);        
    }
    100%{
        transform:translateX(-100%);
    }
}

.marquee a:nth-child(1) {
    animation: left-one 10s ease infinite;
}
.marquee a:nth-child(2) {
    animation: left-two 10s ease infinite;
}