@charset "UTF-8";

* {
    margin: 0;
    padding: 0;
    background-color: #efefef;
    background-image: linear-gradient(90deg, #393b3d80 0.5px, transparent 0.5px), linear-gradient(#393b3d80 0.5px, transparent 0.5px);
    background-position: 10px 10px;
    background-size: 21px 21px;
    background-attachment: fixed;
    font-family: Arial, Helvetica, sans-serif;
    text-decoration: none;
    text-align: center;
    
}


body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    height: 100%;
    text-align: center;
}

#wrap {
    display: inline-block;
    text-align: center;
    margin: 0 15px;
    
}


nav ul li {
    display: inline-block;
    text-align: center;
    margin:  10px;
    a:visited {
  color: rgb(0, 0, 0); /* : 訪問済みのリンクを紫色にする */
  
}

}

nav img{
  width: 30%;
  height: auto;
}

nav li{
  text-align: center;
}




.box {
  position     : relative;
  margin       : auto;
  width        : 400px;
  height       : 190px;
  background-color: white;
  
}
.box span {      /* 前面の文字エリア */
  position     : absolute;
  display      : inline-block;
  background   : white(255, 255, 255, 0.6);
  top          : 50%;
  left         : 50%;
  padding      : 3px;
  color        : #333;
  transform    : translate(-50%,-50%);
  font-size    : 12pt;
  border-radius: 5px;
}