I learnt html and css recently and there's something I don't understand how to remove the blank space on the bottom of my website : http://puu.sh/kSu7r/2fd0ed9532.png
And I have a bar http://puu.sh/kSudx/2d6c69a679.png that I would like to be fixed (stays even if I scroll down) but since the code of it involves position:relative it doesnt work ..
Here's the code:
.bar {
 padding:0px;
 background-color:#333333;
 height:60px;
 top: -10px;
 width:100%;
 text-align:center;
}
.bar ul {
 position:relative;
  transform: translateY(-50%);
  top: 50%;
}
.bar li {
 display:inline;
 color:white;
 font-style:Verdana;
 text-align:center;
 font-size:2em;
 font-family:'Raleway';
 margin:10px;
 padding:10px;
}
.bar a {
 text-decoration:none;
 color:white;
}<div class="bar">
<ul>
<li class="btn"><a href="#bottom">Element1</a></li>
<li class="btn"><a href="#bottom">Element2</a></li>
<li class="btn"><a href="#bottom">Element3</a></li>
<li class="btn"><a href="#bottom">Element4</a></li>
</ul>
</div>Thank you very much.
 
    