html {
margin: 0;
padding: 0;
height: 100%
}
body {
margin: 0;
padding: 0;
min-height: 100%;
position:relative;
background-image: url(/star-catcher-astronaut-catching-stars-for-research-astronaut.jpg);
background-size: cover;
background-repeat: repeat-y;
background-position: center
}
.menu-container {
position: absolute;
height:100%;
float:left;
width:100%;
}
.menu-container ul {
display: block;
text-decoration: none;
list-style: none;
}
.menu-button {
height:35px;
width:50px;
box-sizing: border-box;
border-radius: 10%
}
.menu-button span{
display:block;
width:40px;
height:4px;
margin:5px auto;
background-color:#ccc;
border-radius:10%
}