:root{--nav-background:#fff;--nav-shadow:rgba(16, 115, 195, 0.3);--text-color:#000;--hover-color:#ff7220;--item-width:480px}.noteNav{margin:0 auto;box-shadow:0 0 3px var(--nav-shadow);padding:10px 20px;position:relative;background:var(--nav-background);overflow:hidden}.content_box{display:flex;width:100%;overflow:hidden}.announcement_box{display:flex;animation:scroll 30s linear infinite}@keyframes scroll{0%{transform:translateX(0)}100%{transform:translateX(-100%)}}.announcement_item{min-width:var(--item-width)}.announcement_item a{display:inline-block;width:100%;text-align:center;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;font-size:15px;color:var(--text-color);transition:color .3s}.announcement_item a::hover{color:var(--hover-color)}