header.header{transition:background .5s ease,top .5s ease}section.banner-alert{left:0;padding:4px 0;position:fixed;top:0;transition:opacity .5s ease,max-height .5s ease;width:100%;z-index:999}section.banner-alert *{font-size:14px;margin:0}section.banner-alert .title-wrapper{text-align:center;width:100%}section.banner-alert a.alert-close{position:absolute;right:5px;top:50%;transform:translateY(-50%)}