1765862-ref.html (552B)
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <style> 5 .site-header { 6 position: relative; 7 z-index: 7; 8 } 9 .dropnav { 10 visibility: hidden; 11 } 12 .dropnav:after { 13 -webkit-backdrop-filter:blur(5px); 14 content:""; 15 height:calc(100vh - 70px); 16 position:fixed; 17 width:100%; 18 } 19 </style> 20 </head> 21 <body> 22 <header class="site-header"> 23 <div class="dropnav"> 24 <span>App</span> 25 </div> 26 </header> 27 <div style="position: relative; top: 100px; left: 100px; width: 200px; height: 200px; background: blue;"></div> 28 </body> 29 </html>