.mainDiv1{
width:100%;
height:100%;
display:block;
border:0px solid #ffff00;
background-image:url(img/bg01.jpg);
background-repeat:no-repeat;
background-color:#49423f;

}

.mainDiv2{
width:100%;
height:100%;
display:block;
border:0px solid #ffff00;
background-image:url(img/bg02.jpg);
background-repeat:no-repeat;
background-color:#3a3752;

}

.mainDiv3{
width:100%;
height:100%;
display:block;
border:0px solid #ffff00;
background-image:url(img/bg03.jpg);
background-repeat:no-repeat;
background-color:#4f342c;

}