body {
                 background: linear-gradient(to top, rgba(0,153,255,0.5), #009);
                 background-color: black;
                 font-size: 15px;
                 font-family: "メイリオ"," Meiryo", "Hiragino Kaku Gothic Pro", "ヒラギノ角ゴ Pro W3", "ＭＳ Ｐゴシック", "Lucida Grande", "Lucida Sans Unicode", "Arial", "Verdana",             "sans-serif";
                 margin: 0px auto;
                 width:1500px;
            }

       article {
              background-color: white;
              display: block;
              padding-left: 50px;
              padding-right: 50px;
              padding-top:10px ;
              text-align:center;
              min-height:500px;
              height:auto !important;
              height:500px;
         }

          #pic{
            float:left;
            margin:10px;
            }

        .current{
            text-align:center;
            }

         .main{
           text-align:center;
         }
            footer {
                 background-color: black;
                 color: white;
                 height: 34px;
                 line-heiht: 32px;
                 text-align: center;
                // width:1000px;
            }

            header {
                 background-color: black;
                 color: white;
                 height: 40px;
                 line-height: 40px;
                 text-align: center;
                // width:1000px;
            }
            header h3 {
                 margin: 0px auto;
                 text-align: center;
            }

            nav {
                 background: lightblue;
                 color: white;
                 display: block;
                 height: 30px;
                 line-height: 30px;
               //  margin: 0px auto;
                 padding: 0px;
                 text-decoration: none;
            }


            nav ul, nav li {
                list-style-type:none;
                 line-style: none;
                 margin : 0px auto;
            }

            ul#Nav001 li {
                 font-size: 13px;
            }

            ul#Nav001 li a {
                 background: url(../pic/yajirushi.gif) no-repeat 0px 0px;
                 color: #666;
                 height: 20px;
                 margin-left: 17px;
                 padding-left: 22px;
                 padding-top: 2px;
                 text-decoration: none;
            }

            ul#Nav001 li a:hover {
                 background: url(../pic/yajirushi.gif) no-repeat 2px 0px;
                 color: #F90;
            }

            article {
                 background-color: white;
                 display: block;
                 padding-left: 20px;
                 padding-right: 20px;
                 padding-top:10px ;
                 text-align: left;
                 color:darkblue;
            }


            #ans1,#ans2{
              margin-left:50px;
              color:green;
              }

            #d2,#d2a{
              background-color:pink;
              }
            .deparr{
              font-weight:bold;
              color:blue;
              }

            #wdm{
              margin-left:100px;
            }

            #omake{
              text-align:center;
            }

            #aaa{
               margin-left:100px;
               margin-right:100px;
            }