h2[data-text] {
position: relative;
}
h2[data-text]::after {
content: attr(data-text);
z-index: 10;
color: red;
position: absolute;
top: 0;
left: 0;
-webkit-mask-image: -webkit-gradient(linear, left top, left bottom, from(rgba(0,0,0,0)), color-stop(50%, rgba(0,0,0,1)), to(rgba(0,0,0,0)));
}