CIRCLE HOVER EFFECT

Hey! Traigo un tuto muy lino y espero que les ayude 

Ok aqui pueden ver como es:

LIVE PREVIEW HERE

Ok empecemos:

Coloquen el codigo antes de: </style>

.ch-grid {
 margin: 20px 0 0 0;
 padding: 0;
 list-style: none;
 display: block;
 text-align: center;
 width: 100%;
}
.ch-grid:after,
.ch-item:before {
 content: '';
    display: table;
}
.ch-grid:after {
 clear: both;
}
.ch-grid li {
 width: 320px;
 height: 320px;
 display: inline-block;
 margin: 20px;
}
.ch-item {
 width: 100%;
 height: 100%;
 border-radius: 50%;
 position: relative;
 cursor: default;
 box-shadow:
  inset 0 0 0 16px rgba(255,255,255,0.6),
  0 1px 2px rgba(0,0,0,0.1);
 
 -webkit-transition: all 0.4s ease-in-out;
 -moz-transition: all 0.4s ease-in-out;
 -o-transition: all 0.4s ease-in-out;
 -ms-transition: all 0.4s ease-in-out;
 transition: all 0.4s ease-in-out;
}
.ch-img{
 background-image: url(http://25.media.tumblr.com/tumblr_m7qa9yxlUR1r5ei3ho1_500.jpg);
background-position:50% 50%;
background-size:500px;
}
.ch-info {
 position: absolute;
 background: url(http://25.media.tumblr.com/tumblr_lyjn8soO2W1ro1s33o1_500.jpg) D9E8FC;background-position:50% 50%;
 width: inherit;
 height: inherit;
 border-radius: 50%;
 opacity: 0;

 -webkit-transition: all 0.4s ease-in-out;
 -moz-transition: all 0.4s ease-in-out;
 -o-transition: all 0.4s ease-in-out;
 -ms-transition: all 0.4s ease-in-out;
 transition: all 0.4s ease-in-out;

 -webkit-transform: scale(0);
 -moz-transform: scale(0);
 -o-transform: scale(0);
 -ms-transform: scale(0);
 transform: scale(0);

 -webkit-backface-visibility: hidden;
}

.ch-item:hover {
 box-shadow:
  inset 0 0 0 1px rgba(255,255,255,0.1),
  0 1px 2px rgba(0,0,0,0.1);
}
.ch-item:hover .ch-info {
 -webkit-transform: scale(1);
 -moz-transform: scale(1);
 -o-transform: scale(1);
 -ms-transform: scale(1);
 transform: scale(1);
 opacity: 1;
}
.ch-item:hover .ch-info p {
 opacity: 1;
}

Editar fondo, tamaño y color de acuerdo a tu gusto.

Ahora pega los siguientes códigos en cualquier lugar cerca de donde quieras colocar el efecto.

-C-Box Version:

<ul class="ch-grid">
<li> <div class="ch-item ch-img">
<div class="ch-info">
<center>
<div style="margin-top:80px; width:270px;background:url(https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjdIqr5B03NYoJJT9j_eMADcJNTspIc54SENwUeTanitw0i1jFW5HoGz79H_ngBFcNY16G73w7PyOUHasDoTLKK3hCXaD-i6Mji2pNHZ81Re9dfN98UFmRRo5X2jP8BQ1tTOVzTPm1pfIOI/s1600/bodybg.gif); border-radius:10px;">
<br/>
cbox codes
</div>
</center>
</div>
</div>
</li>
</ul>

Version Normal:

<ul class="ch-grid"><li><div class="ch-item ch-img"><div class="ch-info"><center><div style="margin-top:80px; width:270px;background:url(https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjdIqr5B03NYoJJT9j_eMADcJNTspIc54SENwUeTanitw0i1jFW5HoGz79H_ngBFcNY16G73w7PyOUHasDoTLKK3hCXaD-i6Mji2pNHZ81Re9dfN98UFmRRo5X2jP8BQ1tTOVzTPm1pfIOI/s1600/bodybg.gif); border-radius:10px;text-align:left;padding:5px;">anything here <br/></div></center></div></div></li></ul>

 Eso es todo. Espero y les sirva 

Credits: