#net a { position: absolute; left: -80px; transition: 0.3s; padding: 15px; width: 100px; text-decoration: none; font-size: 20px; border-radius: 0 5px 5px 0;}#net a:hover { left: 0;}#page1 { top: 20px; background-color: #960018; color: #fff;}#page2 { top: 80px; background-color: #007FFF; color: #fff;}#page3 { top: 140px; background-color: #66FF00;color: #000;}#page4 { top: 200px; background-color: yellow;color: #000;}
<iframe src="https://www.netbax.net/pages/code/myshare/netbax11.html" width="550" height="550"
frameborder="0"></iframe>