figure { 
  display: block; 
  position: relative; 
/*  float: left; */
  overflow: hidden; 
  margin: 0 20px 20px 0;
}
figcaption { 
  position: absolute; 
  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: 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;
}

figure:before { bottom: 10px; left: 10px; }
figure figcaption { left: 0; bottom: -30%;}
figure:hover figcaption { bottom: 0; }

/* Choose variant (use class for figure)*/ 
.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 { bottom: 0; }