body{
background-color: #E6E6FA;
}

td {
font-weight: 900;
}

#divpage {
width: 1200px;
height: 800px;
margin-left: auto;
margin-right: auto;
background-color: #87CEEB;
}

#divtitle {
width: 1200px;
height: 50px;
text-align: center;
img-align: center;
font-size: xx-large;
font-weight: 900;
position: relative;
background-color: #EEE;
}

#divtop {
width: 1200px;
height: 250px;
background-color: #F0FFFF;
}

#divbottom {
width: 1200px;
height: 650px;
background-color: #F0FFFF;
overflow-y: auto;
overflow-x: hidden;
}

#aban {
width: 1200px;
height: 150px;
font-size: xx-large;
background-color: #EEE;
}

#nav {
width: 1200px;
height: 50px;
text-align: center;
position: relative;
background-color: #00FFFF;
}

#intro {
width: 1100px;
height: 250px;
text-align: center;
margin-left: auto;
margin-right: auto;
background-color: #F0FFFF;
position: relative;
}

#disc {
width: 1100px;
height: 100px;
margin-left: auto;
margin-right: auto;
background-color: #F0FFFF;
position: relative;
}

#toc {
width: 1100px;
height: 150px;
margin-left: auto;
margin-right: auto;
background-color: #F0FFFF;
position: relative;
}

#dist {
width: 1100px;
height: 450px;
margin-left: auto;
margin-right: auto;
background-color: #F0FFFF;
position: relative;
}

#tut {
width: 1100px;
height: 200px;
margin-left: auto;
margin-right: auto;
background-color: #F0FFFF;
position: relative;
}

#sites {
width: 1100px;
height: 300px;
margin-left: auto;
margin-right: auto;
background-color: #F0FFFF;
}