Cara buat Tooltip OnClick dari css

Assalamu'alaikum wr wb,
Saya mau share Cara buat Tooltip OnClick dari css.
Berikut ini syntaxnya.
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<style type="text/css">

* { margin: 0; padding: 0; box-sizing: border-box;}
html{
background: #f06;
background: linear-gradient(45deg, #f06, yellow);
min-height: 100%;
font: 1.5em/1.13 Verdana, sans-serif;
}
.ctrl {
position:absolute;
top: 50%; left: 50%;
transition: .5s;
}
.button, .tip a {
display: block;
opacity: .56; filter: alpha(opacity=56);
background: #c9c9c9;
color: #7a8092;
text-align: center;
text-decoration: none;
text-shadow: 0 -1px dimgrey;
}
.button:hover, .ctrl a:hover, .button:focus, .ctrl a:focus { opacity: 1; filter: alpha(opacity=100); }
.button:focus, .ctrl a:focus { outline: none; }
.button {
z-index: 2;
margin: -.625em;
width: 1.25em; height: 1.25em;
border-radius: 50%;
box-shadow: 0 0 3px 1px white;
}

.tip {
z-index: 1;
margin: -5em;
width: 10em; height: 10em;
transform: scale(.001);
list-style: none;
opacity: 0;
}

.tip:before, .tip:after {
position: absolute;
top: 34.3%;
width: .5em; height: 14%;
opacity: .56;
background: #c9c9c9;
content: '';
}
.tip:before {
left: 5.4%;
border-radius: .25em 0 0 .25em;
box-shadow: -1px 0 1px dimgrey, inset 1px 0 1px white, inset -1px 0 1px grey,
inset 0 1px 1px white, inset 0 -1px 1px white;
transform: rotate(-75deg);
}
.tip:after {
right: 5.4%;
border-radius: 0 .25em .25em 0;
box-shadow: 1px 0 1px dimgrey, inset -1px 0 1px white, inset 1px 0 1px grey,
inset 0 1px 1px white, inset 0 -1px 1px white;
transform: rotate(75deg);
}

.button:focus + .tip {
transform: scale(1);
opacity: 1;
}

.slice {
overflow: hidden;
position: absolute;
width: 50%; height: 50%;
transform-origin: 100% 100%;
}

.slice:first-child { transform: rotate(-45deg) skewY(60deg); }
.slice:nth-child(2) { transform: rotate(-15deg) skewY(60deg); }
.slice:nth-child(3) { transform: rotate(15deg) skewY(60deg); }
.slice:nth-child(4) { transform: rotate(45deg) skewY(60deg); }
.slice:last-child { transform: rotate(75deg) skewY(60deg); }

.slice:after {
position: absolute;
top: 32%; left: 32%;
width: 136%; height: 136%;
border-radius: 50%;
transform: skewY(-60deg);
content: '';
}

.slice a {
width: 200%; height: 200%;
border-radius: 50%;
box-shadow: 0 0 3px dimgrey, inset 0 0 4px white;
transform: skewY(-60deg) rotate(-15deg);
background: /* lateral separators */
linear-gradient(75deg,
transparent 50%, grey 50%, transparent 54%) no-repeat 36.5% 0,
linear-gradient(-75deg,
transparent 50%, grey 50%, transparent 54%) no-repeat 63.5% 0,
/* make sure inner part is transparent */
radial-gradient(rgba(127,127,127,0) 49%,
rgba(255,255,255,.7) 51%, #c9c9c9 52%);
background-size: 15% 15%, 15% 15%, cover;
line-height: 1.4;
}

.slice:nth-child(3) a:after {
position: absolute;
top: 13%; left: 50%;
margin: -.25em;
width: .5em; height: .5em;
box-shadow: 2px 2px 2px white;
transform: rotate(45deg);
background: linear-gradient(-45deg, #c9c9c9 50%, transparent 50%);
content: '';
}

</style>


<a class='button ctrl' href='#' tabindex='1'>X</a>
<ul class='tip ctrl'>
<li class='slice'><a href='#'>A</a></li>
<li class='slice'><a href='#'>B</a></li>
<li class='slice'><a href='#'>C</a></li>
<li class='slice'><a href='#'>D</a></li>
<li class='slice'><a href='#'>E</a></li>
</ul>


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Semoga bermanfaat.
sumber : http://cssdeck.com/ 
http://pangeran-it.blogspot.co.id/