nav{background-color:#fff;margin:0 auto;top:0;width:100%}nav a,nav a:hover{font-size:14px;text-decoration:none!important}nav a:hover{color:#515350}nav ul{list-style-type:none;margin:0;padding:0}nav ul li{float:right;position:relative;width:25%}nav ul:after{clear:both;content:"";display:table}nav a{border-bottom:2px solid transparent;color:#515350;display:block;padding:10px 0;text-decoration:none}.sous{background-color:#fff;border-radius:5px;box-shadow:0 0 5px #ccc;display:none;position:absolute;right:0;width:60%;z-index:1000}nav>ul li:hover .sous{display:block}.sous li{float:none;text-align:center;width:100%}.sous a{padding:10px}.sous a,.sous a:hover{border-bottom:none}.deroulant>a:after{content:" ▼";font-size:12px}.conteneur{height:1500px;margin:50px 20px}