.imagen img{	
    position: relative;	
	border:1px solid #FFF;
	background: #9dd53a; /* Old browsers */
background: -moz-radial-gradient(center, ellipse cover,  #9dd53a 0%, #227c07 100%); /* FF3.6+ */
background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,#9dd53a), color-stop(100%,#227c07)); /* Chrome,Safari4+ */
background: -webkit-radial-gradient(center, ellipse cover,  #9dd53a 0%,#227c07 100%); /* Chrome10+,Safari5.1+ */
background: -o-radial-gradient(center, ellipse cover,  #9dd53a 0%,#227c07 100%); /* Opera 12+ */
background: -ms-radial-gradient(center, ellipse cover,  #9dd53a 0%,#227c07 100%); /* IE10+ */
background: radial-gradient(ellipse at center,  #9dd53a 0%,#227c07 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#9dd53a', endColorstr='#227c07',GradientType=1 ); /* IE6-9 fallback on horizontal gradient */
	
}
.imagen img:hover{
background: #1995dc; /* Old browsers */
background: -moz-radial-gradient(center, ellipse cover,  #1995dc 0%, #05abe0 100%); /* FF3.6+ */
background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,#1995dc), color-stop(100%,#05abe0)); /* Chrome,Safari4+ */
background: -webkit-radial-gradient(center, ellipse cover,  #1995dc 0%,#05abe0 100%); /* Chrome10+,Safari5.1+ */
background: -o-radial-gradient(center, ellipse cover,  #1995dc 0%,#05abe0 100%); /* Opera 12+ */
background: -ms-radial-gradient(center, ellipse cover,  #1995dc 0%,#05abe0 100%); /* IE10+ */
background: radial-gradient(ellipse at center,  #1995dc 0%,#05abe0 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#1995dc', endColorstr='#05abe0',GradientType=1 ); /* IE6-9 fallback on horizontal gradient */
box-shadow:#036 0px 0px 10px;

}