*{
margin:0;
padding:0;
}


body{
background-color: aliceblue;
text-align:center;}


img{border:0;}




#main_box{width:840px;
margin:auto;
border-right:3pt solid  lightsteelblue;
border-left:3pt solid  lightsteelblue;
background-color: white;
/*
border-top:1pt solid aqua;
border-bottom:1pt solid aqua;
border-style:solid;
border-width:2pt;
border-color:aqua;
*/
/*
text-align:left;
*/
}

#pp{
margin:auto;
padding:auto;
border-style:none;
text-align:center;

width:140px;
height:30px;
line-height:30px;/*これで、文字が真ん中に移動した*/
background:url(image/top_menu_back.jpg) no-repeat;
font-size:90%;

}


#pp a{
width:140px;
height:30px;
text-decoration:none;
color:black;
/*background:url(image/top_menu_back.jpg) no-repeat;*/
}



#pp a:hover{
padding:auto;
margin:auto;
text-decoration:none;
width:140px;
height:30px;
line-height:30px;/*これで、文字が真ん中に移動した*/
background:url(image/top_menu_push.jpg) no-repeat;
color:white;
float:left;/*これでFireFoxも、箱の大きさが大きくなった */
}

/*
#pp:hover{
margin:auto;
text-decoration:none;
width:140px;
height:30px;
line-height:30px;/*これで、文字が真ん中に移動した*/
background:url(image/top_menu_push.jpg) no-repeat;
}
*/