.imgemp{
    width:20%;
    -webkit-box-shadow: 4px 3px 26px 0px rgba(135, 135, 135, 0.6);
-moz-box-shadow:    4px 3px 26px 0px rgba(135, 135, 135, 0.6);
box-shadow:         4px 3px 26px 0px rgba(135, 135, 135, 0.6);
margin-bottom: 10px;
border-radius:4px;
-moz-border-radius:4px;
-o-border-radius:4px;
-webkit-border-radius:4px;
}

.imgemp:hover{
      width:20%;
-webkit-box-shadow: 4px 3px 26px 0px rgba(48, 51, 51, 0.6);
-moz-box-shadow:    4px 3px 26px 0px rgba(48, 51, 51, 0.6);
box-shadow:         4px 3px 26px 0px rgba(48, 51, 51, 0.6);
margin-bottom: 10px;
border-radius:4px;
-moz-border-radius:4px;
-o-border-radius:4px;
-webkit-border-radius:4px;  
}

.imgempbaixo{
    width:20%;
    
margin-top: 10px;
}