body{
  background-attachment:fixed;
  font-weight:500;
  font-family : "Arial","ＭＳ ゴシック",Osaka,sans-serif;
  }
table{
  border-style:groove;
  }
b{
  font-weight:900;
  font-family : "Times New Roman","ＭＳ ゴシック",Osaka,sans-serif;
  }
:link{color:black}
:visited{color:black}
:hover{color:rgb(221,121,0)}
:actilve{color:red}