/* CSS Document */
.principalbtn {
background-color: blue;
color: white;
font: Times New Roman;
font-size: 12px;
border: none;
cursor: pointer;
padding:5px;
margin-top:20px;
}

.principalbtn:hover {
background-color: red;
}

.suspenso {
position: relative;
display: inline-block;
position: relative;
}
.suspenso-vertical {
display: none;
background-color: grey;
min-width: 100px;
position: absolute; 
}
.suspenso-vertical a {
color: white;
padding: 5px;
font: Times New Roman;
font-size: 12px;
text-decoration: none;
display: block;
}
.suspenso:hover .suspenso-vertical {
display: block;
}