body {
    background-color: #00aa00;
    color: #505050;
    padding: 0px 50px;
    margin: 0px 0px;
    font-size: 22px;
    font-family: serif;
    line-height: 250%;
    /*animation: bgFlash 5s infinite;*/ /* steps(1, end);*/
  }
  
  @media (max-width: 768px) {
    body {
      padding: 0px 10px;
    }
  }

  a{
    text-underline-offset: 3px;
    text-decoration-line: 1px solid;;
  }
  a:hover{
    text-decoration: underline;
  }

  @keyframes bgFlash {
   0%   { background-color: #080; }
   33%  { background-color: #000; }
   66%  { background-color: #eee; }
   100% { background-color: #080; } 
  }
  
  
  #lang{
   margin: 0;
   padding: 0;
  }
  
h1{
  font-size: 42px;
  font-style: normal;
}  
h1 rt{
  font-size: 42px;
  font-style: normal;

}
 
ruby{
    }
    rt{
      margin: 0;
      margin-bottom: 5px;
      margin-left: 0px;
      padding: 0;
      font-size: 20px;
      color: #0a0;
    }
.ja{
  color: #505050;
}
  .en{
    color: #0a0;
    font-family: sans-serif;
  }
  
  section{
   margin-top: 20px;
   margin-bottom: 20px;
  }
  
  
  footer{
    width: 100%;
    text-align: center;
    margin: 0px;
    margin-top: 50px;
    margin-bottom: 50px;
    padding: 0px;
  }
  
  .white{
    color: #fff;
  }
  
  .registration{
    border: 1px solid #000;
    border-radius: 100px;
    padding: 20px 10px;
  }