.centrer-verticalement{display:flex;flex-direction:column;justify-content:center;display:-webkit-box;display:-webkit-flex;display:-moz-box;display:-ms-flexbox;-webkit-box-orient:vertical;-webkit-box-direction:normal;-webkit-flex-direction:column;-moz-box-orient:vertical;-moz-box-direction:normal;-ms-flex-direction:column;-webkit-box-pack:center;-webkit-justify-content:center;-moz-box-pack:center;-ms-flex-pack:center}.et-l--header{position:fixed;top:0;left:0;width:100%;z-index:9999;background-color:white;transition:all 0.3s ease-in-out}#main-content{padding-top:100px}