html {
  box-sizing: border-box;
}
body {
  font-family: "ヒラギノ角ゴ Pro W3",Hiragino Kaku Gothic Pro,"メイリオ",Meiryo,"ＭＳ Ｐゴシック",sans-serif;
  font-size: 14px;
  background-color: #e4e4e4;
  line-height: 1.6em;
}
h1 {
  font-size: 18px;
}
a {
  text-decoration: none;
  color: #00A0C6;
}
dd {
  margin-left: 0px;
}
ul {
  margin-left: 0.2em;
}
.hop:hover {
  opacity: 0.8;
}
.wrapper {
  width: 400px;
  margin: 0 auto;
}
.header {
  width: 100%;
  background: rgba(0, 0, 0, 0) linear-gradient(to bottom, #fffbbf 0%, #ffeb00 70%, #ffeb00 100%) repeat scroll 0 0;
}
.header svg {
  width: 200px;
  padding: 1em;
}
.env {
  border-top: 4px solid #eeeeee;
  border-bottom: 4px solid #eeeeee;
}
.back-to-top {
  background: rgba(0, 0, 0, 0) linear-gradient(to bottom, #4797b2 0%, #128fb9 100%) repeat scroll 0 0;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  text-align: center;
  margin: 10px 0px;
  padding: 12px;
  border-radius: 8px;
}
.back-to-top a {
  font-size: 16px;
  color: white;
  font-weight: bold;
}
@media screen and (max-width: 600px) {
  .wrapper {
    width: 94%;
  }
  br {
    display: none;
  }
  br.br {
    display: block;
  }
  span.pc_space {
    display: none;
  }
}