button {
	border: 15px solid #FFF;
	padding: 5px;
	cursor: pointer;
	background-color: #9F0;
}

Style 1:
.transparency:hover {
    opacity:0.5;	
}


Style 2:
.transparency1 {
    opacity:0.5;	
}
.transparency1:hover {
    opacity:1;	
}

/*STYYYYYLE*/


.content {
	max-width: 1300px;
	width: 100%;
	margin: 0 auto;
}