body, html {
  width:100%;
  max-height:100%;
  background:none;  
  margin:0 auto;
  color:black;
  cursor:url(http://x.triangulation.jp/image/icon/default_cursor.gif), auto !important;
  }

::selection{
		background-color:transparent;
		color:none; 
	}

a:link {
  color:#000;
  text-decoration:none;
  }
a:visited {
  color:#000;
  text-decoration:none;
  }
a:hover {
  color:#000;
  text-decoration:none;
  cursor:url(http://x.triangulation.jp/image/icon/hand_cursor.gif), auto;


}


.header_target {
    margin:0;
    width:100%;
    height:70px;
    top:0px;
    left:0px;
	z-index:20;
    background-color: white;
    position:fixed;
    border-bottom:1px solid black;

}

.menu_header {
    margin:0px;
    width:340px;
    height:70px;
    top:0px;
    text-align:center;
    border-bottom:none;
	display: none;
}

.main_button {
    width:100px;
    height:38px;
    background:none;
    margin:0 auto;
    margin-right:5px;
    margin-left:5px;
    padding-top:28px;
    float:left;
    text-align:center; 
    letter-spacing:3px;
    color:black;
    font-family:Helvetica;
    font-size:12px;
    border-bottom:4px solid white;
    font-weight:400;
}

.main_button:hover {
    border-bottom:4px solid black;
    cursor:url(http://x.triangulation.jp/image/icon/hand_cursor.gif), auto;
}


.logo {
    margin:0px;
    width:100%;
    height:20px;
    top:0px;
    padding:25px;
    background-color: white;
    position:fixed;
    text-align:center;
    border-bottom:none;
    color:black;
    font-family:Helvetica;
    font-size:20px;
    letter-spacing:10px;
    left:-14px;
}

.header_target:hover .menu_header{
display : block;
}

.header_target:hover .logo{
display : none;
}