body{
	background: url(../images/web.jpg) no-repeat center center fixed; 
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}
.columns img{
	width: 100%;
}
#texto{
	text-align: center;
}
#texto span{
	color: #14621b;
	font-weight: bold;
}
a{
	text-decoration: none;
	color: #000;
}