/*DARKEN*/
.brighten img {
  -webkit-filter: brightness(-65%);
  -webkit-transition: all 1s ease;
     -moz-transition: all 1s ease;
       -o-transition: all 1s ease;
      -ms-transition: all 1s ease;
          transition: all 1s ease;
}

.brighten img:hover {
  -webkit-filter: brightness(0%);
}

#ex5 {
	margin: 0 auto;
}

#ex5 img {
	margin: 5px;
	opacity: 0.8;
	border: 3px solid #eee;
	
	/*Transition*/
	-webkit-transition: all 0.5s ease;
	-moz-transition: all 0.5s ease;
	-o-transition: all 0.5s ease;
	
}


#ex5 img:hover {  
   opacity: 1;
   

 
   /*Glow*/
  -webkit-box-shadow: 0px 0px 20px rgba(255,255,255,0.8);
  -moz-box-shadow: 0px 0px 20px rgba(255,255,255,0.8);
  box-shadow: 0px 0px 20px rgba(255,255,255,0.8);  
  -webkit-filter: brightness(130%);
}