a.toukou {
  position: relative !important;
  display: inline-block !important;
  background: #111111 !important;
  color: #ffffff !important;
  border: none !important;
  border-radius: 0 !important;
  width: 70% !important;
  font-size: 120% !important;
  line-height: 1.9 !important;
  text-align: center !important;
  text-decoration: none !important;
  cursor: pointer !important;
  padding: 1em 2em !important;
  transition: all 0.4s !important;
}
a.toukou:visited {
  background: #111111 !important;
  color: #ffffff !important;
  border: none !important;
  text-decoration: none !important;
}
a.toukou:active {
  background: #f0f0f0 !important;
  color: #111111 !important;
  border: none !important;
  text-decoration: none !important;
}
a.toukou:hover {
  background: #f0f0f0 !important;
  color: #111111 !important;
  border: none !important;
  text-decoration: none !important;
  opacity: 1 !important;
}
a.toukou:before {
  content: "" !important;
  position: absolute !important;
  bottom: 0 !important;
  left: 50% !important;
  right: 50% !important;
  display: block !important;
  height: 4px !important;
  background: #111111 !important;
  transition: all 0.4s !important;
}
a.toukou:hover:before {
  left: 0 !important;
  right: 0 !important;
  background: #111111 !important;
}