.cards {
	opacity:0;
   transition: opacity .25s ease-in-out;
   -moz-transition: opacity .25s ease-in-out;
   -webkit-transition: opacity .25s ease-in-out;
   width: 250px;
}

.cards:hover{
	opacity:1;
}

.chamadas{
float:left;
width:280px;
height: 208px;
margin-top:0;
}

.chamada-1{
background:url(../img/thumb-relatorio2.jpg) no-repeat;
}
.chamada-2{
background:url(../img/thumb-mortos-desaparecidos2.jpg) no-repeat;
}
.chamada-3{
background:url(../img/thumb-arquivos2.jpg) no-repeat;
}
.chamada-4{
background:url(../img/thumb-livros2.jpg) no-repeat;
}

.sobre{
	float:right;
	margin:0 90px 0 0;
	  display: inline-block;
  font-size: 15px;
  height: 74px;
  padding: 2px 5px;
  line-height: 39px;
  color: #333;
  text-decoration: none;
}

#creditos-rodape{
background-color:#fff;height:65px;padding:10px 0;
}

.sobre:hover{
  text-decoration: underline;
  color: #000;
}