HTML/CSS Stała szerokość dla div

<style type = "text/css">
@font-face {
font-family: 'Coolvetica';
src: url('img/COOLVETI.TTF');
src: local('Coolvetica'), url(img/COOLVETI.TTF) format("truetype")
}
#Background
{
background-image: url('img/BG.png');
width: 100%;
height: 100%;
color: white;
display: table;
font-family: Coolvetica;

}

#TLogo
{
display: table;
}

#Logo1
{
background-image: url('img/LOGO.png');
background-position: center;
margin-left: 195px;
width: 363px;
height: 363px;
float: left;
}

#Logo2
{
float: left;
background-image: url('img/LOGONAPIS.png');
width: 499px;
height: 317px;
}

#BgMenu
{
display: table;
margin: auto;
max-height: 188px;
background-color: #363636;
}

#Menu
{
float: left;
margin-left: 180px;
}

#Menu ul, ul li
{
display: block;
list-style: none;
padding: 0;
margin: 0;
}

#Menu ul
{
list-style-type:none;
padding:0;
margin:0;
font-size:18px;
height:2em;
line-height:16em;
text-align:center;
}

#Menu ul > li
{
float:left;
margin: 10px;
}

#Menu  a {
text-decoration: none;
background: url("img/KWADRAT2.png");
color: #585858;
display: block;
width: 164px;
height:300px;
background-repeat: no-repeat;
}

#Menu ul > li > a:hover {
background: url("img/KWADRATUSE2.png");
}

</style>