#bouton {
width: 218px;
border-right: 1px solid #000;
padding: 0 0 1em 0;
margin-bottom: 1em;
font-family: 'Trebuchet MS', 'Lucida Grande', Arial, sans-serif;
/*font-size: 90%;*/
background-color: #90bade;
color: #333;
text-align:right

}

#bouton ul {
list-style: none;
margin: 0;
padding: 0;
border: none;
}

#bouton li {
border-bottom: 1px solid #80bade;
margin: 0;
text-align:right
}

#bouton li a {
display: block;
padding: 0px 2px 0px 0.5em; /* original 5px 5px 5px */
border-left: 10px solid #1958b7;
border-right: 10px solid #508fc4;
background-color: #2175bc;
color: #fff;
text-decoration: none;
width: 100%;
}

html>body #bouton li a {
width: auto;
}

#bouton li a:hover {
border-left: 10px solid #1c64d1;
border-right: 10px solid #5ba3e0;
background-color: #2586d7;
color: #fff;
}