body 
{
    font-family: "メイリオ", "ヒラギノ角ゴ Pro W3";
}

.contentswrap
{
    width:100%;
}

.contents
{
    margin:0 auto;
    width:740px;
}

#mainside
{
    padding:20px 0px;
    float:left;
}

#sidebar
{
    padding:20px 0px;
    float:right;
}

.w540-260 #mainside
{
    width:460px;
}

.w540-260 #sidebar
{
    width:240px;
}

.w600-200 #mainside
{
    width:538px;
}

.w600-200 #sidebar
{
    width:182px;
}

hr
{
    clear:both;
    height:0px;
    visibility:hidden;
}