* {box-sizing: border-box}
body {font-family: "Lucida Console", sans-serif;}

/* Style the tab */
.tab {
  float: left;
  border: none;
  width: 15%;
  height: 100%;
}

/* Style the buttons inside the tab */
.tab button {
  display: block;
  background-color: inherit;
  color: black;
  width: 100%;
  border: none;
  outline: none;
  text-align: left;
  cursor: pointer;
  transition: 0.3s;
  font-size: 12px;
}

/* Style the tab content */
.tabcontent {
  float: left;
  padding: 0px 12px;
  border: 1px solid #ccc;
  width: 85%;
  height: 100%;
  font-size: 12px;
}

.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
}

footer {

position:absolute;
bottom:0;
width:99%;
height:50px;
text-align: center;
font-size: 10px;
font-family: Lucida Console;
}