decoration of title using css code example

Example 1: how to stilize title property css

/* use for any tag on your page */
[data-title]:hover:after {
    opacity: 1;
    transition: all 0.1s ease 0.5s;
    visibility: visible;
}
/* box for title text */
[data-title]:after {
    content: attr(data-title);
  	/* position for title view box */
  	position: absolute;
  	bottom: -1.6em;  	
    left: 100%;
    z-index: 99999;
    visibility: hidden;
    /* optional */
    white-space: nowrap;
  	/* stilization */
    background-color: #00FF00;
    color: #111;
    font-size: 150%;
    padding: 1px 5px 2px 5px;
    box-shadow: 1px 1px 3px #222222;
    opacity: 0;
    border: 1px solid #111111;
}
[data-title] {
    position: relative;
}

/* on html page in your tags */
/* 
<a href="example.com" data-title="My site"> Link </a> with styled tooltip (bigger and with a different background color, as requested in the question)<br/>
<a href="example.com" title="My site"> Link </a> with normal tooltip
*/

Example 2: make title beautiful using css

h1 { 
  text-align: center;
  color: white;
  text-transform: uppercase;
  padding: 1px;
  font-family: 'Raleway', cursive;
  font-weight: 100;
  position: relative;
  background: -webkit-linear-gradient(left, black, #eee, black);
  background: -moz-linear-gradient(left, black, #eee, black);
  background: -ms-linear-gradient(left, black, #eee, black);
  background: -o-linear-gradient(left, black, #eee, black);
}
h1:before {
  content: "";
  position: absolute;
  left: 50%;
  top: -50px;
  width: 600px;
  margin-left: -300px;
  margin-top: -220px;
  height: 600px;
  background: -webkit-radial-gradient(50% 50%, ellipse closest-side, #444, black);
  background: -moz-radial-gradient(50% 50%, ellipse closest-side, #444, black);
  background: -ms-radial-gradient(50% 50%, ellipse closest-side, #444, black);
  background: -o-radial-gradient(50% 50%, ellipse closest-side, #444, black);
  z-index: -1;
}
h1 a {
  background: black;
  display: block;
  padding: 20px;
  text-decoration: none;
  letter-spacing: 30px;
  color: white;
}

Example 3: decroation of title using css

:root:lang(ja), [lang|=ja], :root:lang(ko), [lang|=ko] { text-underline-position: under right; }
:root:lang(zh), [lang|=zh] { text-underline-position: under left; }