body{
  font-family:"Anek Telugu",sans-serif;
  text-align:center;
  background:#f4f6fb;
  padding:20px;
}

h1{color:#2c3e50;}

.bigBtn{
  font-family:"Anek Telugu",sans-serif;
  font-size:26px;
  padding:18px 50px;
  background:#2980b9;
  color:white;
  border:none;
  border-radius:14px;
  cursor:pointer;
}

.box{
  font-size:72px;
  width:120px;
  height:95px;
  text-align:center;
  margin:10px;
}

#timer{font-size:32px;color:#c0392b;}

#result{
  font-size:30px;
  color:green;
  font-weight:bold;
  margin-top:20px;
}

.student{
  display:inline-block;
  width:60px;
  height:60px;
  line-height:40px;
  margin:6px;
  border-radius:50%;
  background:#ddd;
  cursor:pointer;
}
.student span{display:block;font-size:14px;}
.active{background:#27ae60;color:white;}