html {
  font-size: 20px;
}
body {
  color: black;
  line-height: 2;
  text-alight: center;
  margin: 0;
  background: linear-gradient(-50deg, #3CB371, #87A96B, #23a6d5, #23d5ab);
	background-size: 400% 400%;
	animation: gradient 15s ease infinite;
}
@keyframes gradient {
	0% {
		background-position: 0% 50%;
	}
	50% {
		background-position: 100% 50%;
	}
	100% {
		background-position: 0% 50%;
	}
}
h1 {
  color: blue;
  font-family: tahoma;
  text-shadow: #FC0 1px 0 10px;
}
p {
  text-shadow: #FC0 1px 0 10px;
  font-family: tahoma;
  color: lavender;
}
ol {
  text-shadow: #FC0 1px 0 10px;
}
#img-div {
 display: block;
 max-width: 100%;
 margin-left: auto;
 margin-right: auto;
}
#image {
    display: block;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
}