body{box-sizing:border-box;margin:0}.container{margin:0 auto;max-width:1280px;padding:0 30px}header.header{padding:10px 0 13px;z-index:100}.header_logo{display:inline-block}header.header.sticky_header{box-shadow:0 1px 3px rgba(0,0,0,.12);position:fixed;transition:all 1s ease;width:100%}