CSS Flashy button with glaze effect

.flashybtn
{
    display: block;
    text-align: center!important;
    text-decoration: none!important;
    font-weight: 800!important;
    font-size: 1.5em;
    text-transform: uppercase!important;
    color: #fff!important;
    padding: 1em 0.1em 1em 0.1em!important;
    background-size: 200% auto!important;
    box-shadow: 0 4px 6px rgba(50,50,93,.11),0 1px 3px rgba(0,0,0,.08)!important;
    background-image: linear-gradient(to right,#ff473d 0%,#ff379d 50%,#f13790 100%)!important;
    animation: gradient 1.5s ease infinite!important;
    width: 100%;
    position: relative; //change to fixed to make it sticky
    bottom: 0;
    left:0;
    z-index: 9999;
	}
.flashybtn:before {
    content: "";
    display: inline-block;
    position: absolute;
    background: rgb(255,255,255);
    width: 30px;
    height: 2em;
    left: 0;
    bottom: 0;
    filter: blur(1.5em);
    animation: 2s glaze infinite;
}
@keyframes glaze{
    from{
        transform: translateX(0) skewX(-15deg);
        opacity:1;
        }
    to {
        transform: translateX(100vw) skewX(-15deg);
        opacity:1;
       }
}