fieldset{border-style:ridge;}
#introduction {font-weight:bold;font-size:12px;margin-top:5px;}
input {margin-bottom:5px;margin-left:5px;}
textarea {margin-bottom:5px;margin-left:5px;}
label{font-weight:bold;font-size:12px;margin-left:5px;}
#bouton{position:relative;left:200px;font-weight: bold;background-color: #a6ab69;}