html, body {
  margin: 0px 0px 0px 0px;
  padding: 5px;
  min-width:80%;
  min-height:80%;
  font: 18px;	
}

body{
color: white ;
background-image: url('img/John-von-Neumann.jpg'); 
}

a{
color: rgb(128,0,256);
}



div.fond{
background-color:black;
opacity:0.8;
max-width:972px;
}

.Sofronitsky {
  color: rgb(128,128,255)
}

nav ul li {
  display: inline-block ;
  vertical-align: bottom;
  height: 30px; line-height: 30px;
  background-color: rgb(128,128,256);
  
}