纯css3实现的文字亮光特效

<span class="shiny"><span class="inner-shiny">Shiny</span> </span>

body
{
background: #111;
}

.shiny
{
color: #F5C21B;
background: -webkit-gradient(linear, left top, left bottom, from(#F5C21B), to(#D17000));
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
display:block;
width:610px;
margin:auto;
font-family: "Source Sans Pro", sans-serif;
font-size: 13em;
font-weight: 900;
position: relative;
text-transform: uppercase;
}

.shiny::before
{
background-position: -180px;
-webkit-animation: flare 5s infinite;
-webkit-animation-timing-function: linear;
background-image: linear-gradient(65deg, transparent 20%, rgba(255, 255, 255, 0.2) 20%, rgba(255, 255, 255, 0.3) 27%, transparent 27%, transparent 100%);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
content: "Shiny";
color: #FFF;
display: block;
padding-right: 140px;
position: absolute;
}

.shiny::after
{
content: "Shiny";
color: #FFF;
display: block;
position: absolute;
text-shadow: 0 1px #6E4414, 0 2px #6E4414, 0 3px #6E4414, 0 4px #6E4414, 0 5px #6E4414, 0 6px #6E4414, 0 7px #6E4414, 0 8px #6E4414, 0 9px #6E4414, 0 10px #6E4414;
top: 0;
z-index: -1;
}

.inner-shiny::after, .inner-shiny::before
{
-webkit-animation: sparkle 5s infinite;
-webkit-animation-timing-function: linear;
background: #FFF;
border-radius: 100%;
box-shadow: 0 0 5px #FFF, 0 0 10px #FFF, 0 0 15px #FFF, 0 0 20px #FFF, 0 0 25px #FFF, 0 0 30px #FFF, 0 0 35px #FFF;
content: "";
display: block;
height: 10px;
opacity: 0.7;
position: absolute;
width: 10px;
}

.inner-shiny::before
{
-webkit-animation-delay: 0.2s;
height: 7px;
left: 0.12em;
top: 0.8em;
width: 7px;
}

.inner-shiny::after
{
top: 0.32em;
right: -5px;
}

@-webkit-keyframes flare
{
0%   { background-position: -180px; }
30%  { background-position: 500px; }
100% { background-position: 500px; }
}

@-webkit-keyframes sparkle
{
0%   { opacity: 0; }
30%  { opacity: 0; }
40%  { opacity: 0.8; }
60%  { opacity: 0; }
100% { opacity: 0; }
}