a.bottone:link, a.bottone:visited {
background-color: black;
border: 1px groove red;
border-radius: 10px;
color: white;
padding: 2px 4px;
margin: 0px 0px;
font-family: "Times New Roman", Georgia, Serif;
text-align: center;
font-weight: bold;
text-decoration: none;
display: inline-block;
font-size: 16px;
cursor: pointer;
}

a.bottone:hover, a.bottone:active {
background-color: grey;
}

div.riquadro {
margin: auto;
padding: 0px;
width: 300px;
height: 350px;
clear: both;
}

div.riquadro1 {
float: left;
padding: 0px;
width: 300px;
height: 430px;
border: 0px;
text-align: center;
}

img.immagini {
max-width: 90%;
border: 0px;
}

img.immagini-ombra {
max-width: 90%;
border: 0px;
box-shadow: 0 4px 8px 0 grey;
}