body {
	font-family: "Trebuchet MS", "Helvetica", "Arial",  "Verdana", "sans-serif";
}

.button1 {
  background-color: white;
  border: none;
  padding: 0px;
  text-align: bottom;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 0px 2px;
  cursor: pointer;
  border-radius: 10px;
  bottom: -5px;
  vertical-align:bottom;
  position:relative;
}

.button1:active {
    transform: translateY(2px);
}

.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip .tooltiptext {
  visibility: hidden;
  width: 140px;
  background-color: #888;
  color: #fff;
  text-align: center;
  border-radius: 6px;
  padding: 4px 0;
  position: absolute;
  z-index: 1;
  bottom: 125%;
  left: 50%;
  margin-left: -70px;
  opacity: 0;
  transition: opacity 0.3s;
}

.tooltip .tooltiptext::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: #555 transparent transparent transparent;
}

.tooltip:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}