<style>
figure {
display: block;
position: relative;
float: left;
overflow: hidden;
margin: 0 20px 20px 0;
}
figcaption {
position: absolute;
background: black;
background: rgba(0,0,0,0.75);
color: white;
padding: 10px 20px;
opacity: 0;
-webkit-transition: all 0.6s ease;
-moz-transition: all 0.6s ease;
-o-transition: all 0.6s ease;
}
figure:hover figcaption {
opacity: 1;
}
figure:before {
content: "?";
position: absolute;
font-weight: 800;
background: black;
background: rgba(255,255,255,0.75);
text-shadow: 0 0 5px white;
color: black;
width: 24px;
height: 24px;
-webkit-border-radius: 12px;
-moz-border-radius: 12px;
border-radius: 12px;
text-align: center;
font-size: 14px;
line-height: 24px;
-moz-transition: all 0.6s ease;
opacity: 0.75;
}
figure:hover:before {
opacity: 0;
}
.cap-left:before { bottom: 10px; left: 10px; }
.cap-left figcaption { bottom: 0; left: -30%; }
.cap-left:hover figcaption { left: 0; }
.cap-right:before { bottom: 10px; right: 10px; }
.cap-right figcaption { bottom: 0; right: -30%; }
.cap-right:hover figcaption { right: 0; }
.cap-top:before { top: 10px; left: 10px; }
.cap-top figcaption { left: 0; top: -30%; }
.cap-top:hover figcaption { top: 0; }
.cap-bot:before { bottom: 10px; left: 10px; }
.cap-bot figcaption { left:0; bottom: -30%;}
.cap-bot:hover figcaption { top: 0; right:0;}
</style>
<figure class="cap-bot">
<img src="https://css-tricks.com/examples/SlideinCaptions/images/1.jpg" alt="">
<figcaption>
test test <br><a href="http://www.google.com">google</test>
</figcaption>
</figure>
