.centrer-verticalement{display:flex;flex-direction:column;justify-content:center}#main-header{-webkit-box-shadow:none;-moz-box-shadow:none;box-shadow:none}@media (max-width:980px){.et_non_fixed_nav.et_transparent_nav #main-header,.et_non_fixed_nav.et_transparent_nav #top-header,.et_fixed_nav #main-header,.et_fixed_nav #top-header{position:fixed}}