button_index {
  display: block;
  width: 80%;
  height: 7em;
  border: none;
  font-family: Verdana, Arial, Helvetica, sans-serif;
  font-size: 0.8em;
  text-decoration: none;
  color: #34495e;
  padding: 20px 28px;
  margin: 10px 10px;
  background-color: #ffffff;
  border-radius: 5px;
  cursor: pointer;
  text-align: center;
  line-height: 1em;
}
button_slot {
  display: block;
  width: 80%;
  height: 80px;
  border: none;
  font-family: Verdana, Arial, Helvetica, sans-serif;
  font-size: 0.8em;
  text-decoration: none;
  color: #34495e;
  padding: 5px 5px;
  background-color: #ffffff;
  border-radius: 5px;
  cursor: pointer;
  text-align: center;
}
button_slotgrey {
  display: block;
  width: 80%;
  height: 80px;
  border: none;
  font-family: Verdana, Arial, Helvetica, sans-serif;
  font-size: 0.8em;
  text-decoration: none;
  color: #34495e;
  padding: 5px 5px;
  background-color: rgba(255,255,255,0.2);
  border-radius: 5px;
  cursor: pointer;
  text-align: center;
  pointer-events: none;
}
button_slotinfo {
  display: block;
  width: 80%;
  height: 80px;
  border: none;
  font-family: Verdana, Arial, Helvetica, sans-serif;
  font-size: 0.8em;
  text-decoration: none;
  color: #34495e;
  padding: 5px 5px;
  background-color: rgba(188,188,188,1.0);
  border-radius: 5px;
  cursor: pointer;
  text-align: center;
  pointer-events: none;
}

button_add {
  display: block;
  width: 80%;
  height: 80%;
  border: 1px solid #ffffff;
  border-radius: 10px;
  font-family: Verdana, Arial, Helvetica, sans-serif;
  font-size: 1em;
  text-decoration: none;
  color: #3376f9;
  padding: 20px 28px;
  margin: 10px 10px;
  background-color: #ffffff;
  cursor: pointer;
  text-align: center;
  box-shadow: 0 8px 16px 0 rgba(0,0,0,0.2), 0 6px 20px 0 rgba(0,0,0,0.19);
}