#c{
position: fixed; 
top:0; 
left: 0; 
z-index:-1; 
opacity:0.85;
}
* {
margin: 0;
padding: 0;
border: 0;
}
#div_digg1 {
padding: 5px;
position: fixed;
_position: absolute;
z-index: 1000;
bottom: 5%;
left: 3.5%;
_left: 15px;
border: 0;
}
body {
color: #000;
background-color: #e6e6e6;
font-family: "Helvetica Neue",Helvetica,Verdana,Arial,sans-serif;
font-size: 12px;
min-height: 101%;
}
#home {
border-radius: 18px;
margin: 0 auto;
width: 80%;
min-width: 750px;
background-color: #fff;
background-image: url();
background-attachment: fixed;
padding: 30px;
margin-top:50px;
margin-bottom: 50px;
box-shadow: 0 2px 6px rgba(100, 100, 100, 0.3);
opacity: 0.9;
}
#sideBar { 
font-size: 12px;
border-radius: 18px;
margin: 0 auto;
background-color: #fff;
background-attachment: fixed;
box-shadow: 0 2px 6px rgba(100, 100, 100, 0.3);
opacity: 0.7;
}
<style>.github-corner:hover .octo-arm{animation:octocat-wave 560ms ease-in-out}@keyframes octocat-wave{0%,100%{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}@media (max-width:500px){.github-corner:hover .octo-arm{animation:none}.github-corner .octo-arm{animation:octocat-wave 560ms ease-in-out}}</style>