.highlight{
    position:relative
}
.highlight:before{
    content:"";
    mix-blend-mode:overlay;
    top:0;
    transform:translateX(100%);
    left:0;
    width:100%;
    height:100%;
    position:absolute;
    z-index:1;
    animation:slide 2s 1s infinite;
    background:-moz-linear-gradient(-45deg,hsla(0,0%,100%,0) 19%,#fff 48%,hsla(0,0%,100%,0) 79%);
    background:-webkit-linear-gradient(-45deg,hsla(0,0%,100%,0) 19%,#fff 48%,hsla(0,0%,100%,0) 79%);
    background:linear-gradient(135deg,hsla(0,0%,100%,0) 19%,#fff 48%,hsla(0,0%,100%,0) 79%);
    filter:progid:DXImageTransform.Microsoft.gradient(startColorstr="#00ffffff",endColorstr="#00ffffff",GradientType=1);
    opacity:.5
}
@keyframes slide{
    0%{
        transform:translateX(-100%)
    }
    to{
        transform:translateX(100%)
    }
}