I Love Blur

CSS Code

html {
  height: 100%;
}
body {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0;
  width: 100%;
  height: 100%;
  text-align: center;
  font-family: "Lucida Grande", Lucida, Verdana, sans-serif;
  background-color: hsl(210,50%,20%);
  background: url(bg.png), linear-gradient(90deg, hsl(210,40%,12%), 
  hsl(210,40%,20%), hsl(210,40%,12%));
}
.txt[contenteditable] {
  outline: none;
}
/* Box ------------------------------------------------------ */
#box {
  padding: 50px;
  font-size: 5em;
  font-weight: bold;
}
/* txt ------------------------------------------------------ */
.txt {
  color: hsla(0,0%,0%,0);
  text-shadow: #fff 0 0 60px;
  transition: text-shadow 2s cubic-bezier(0, 1, 0, 1);
}
@-moz-document url-prefix() {.txt {
  text-shadow: #fff 0 0 20px;
} } /* FF fix */
#box:hover .txt {
  text-shadow: #fff 0 0 5px;
  transition: text-shadow 1s cubic-bezier(0, 0.75, 0, 1);
}
/* ♥ ------------------------------------------------------ */
.♥ {
  margin: 0 10px;
  color: hsla(0,0%,0%,0);
  text-shadow: red 0 0 5px;
  transition: text-shadow 1s cubic-bezier(0, 1, 0, 1);
}
#box:hover .♥ {
  text-shadow: red 0 0 100px;
  transition: text-shadow 2s cubic-bezier(0, 0.75, 0, 1);
}
@-moz-document url-prefix() { #box:hover .♥ {
  text-shadow: red 0 0 20px; } } /* FF fix */

HTML Code

<div id="box">
 <span class="txt">I</span>
 <span class="♥">♥</span>
 <span class="txt" contenteditable spellcheck="false">BLUR</span>
</div>

LIVE PREVIEW

See the Pen CSS Gallery - I Love Blur by Peternak Blog (@peternakblog) on CodePen.

Credit: Simurai