body{font-family: 'Open Sans', 'Arial';color: #666;line-height: 1.7em;}
.image_principale2{height:80vh;background-image: url("../img/fond2.jpg");background-repeat: no-repeat ;background-position: center;background-size:cover; }

h1{font-size:2rem;letter-spacing: 0.3rem;text-align:center;}
h2{font-size:1.8rem;letter-spacing: 0.3rem;text-align:center;}
h3{font-size: 1rem;font-weight: bolder;}

li{font-size:0.85rem;margin: 4px;}