body {
  background-color: #dbf3c9;
  color: #2c3e50;
  font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
  
  font-size: 1em;
  margin: 5px;
}

  button {
  font-size: 20px;
  background-color: White;
  color: Black;
  border: 2px solid black;
  box-shadow: 4px 4px 4px #999999;
  margin: 15px 820px;
}
button:hover, button:focus, Button:active {
  color: #EBF5FF;
  background-color: black;
  color: white;
  cursor: pointer;
}
a {
  color: black;
}
img {
  size: 100px
}
.center {
  text-align: center;
}
li {
  margin: 20px 520px;
}
p {
  text-align:center;
}
.heading {
  text-align:center;
}

div {
 margin: 20px 710px;
}
.quizbutton {
  font-size: 30px;
}