body {
	background-color: #A0A0ff;
    background-image: url("../DinosFiles/background.png");
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
}

h1 {
	font-size: 160%;
}

h2 {
	font-size: 140%;
}

h3 {
	font-size: 120%;
}

p {
	font-size: 100%;
	text-align: justify;

}

p.title {
	text-align: center;
	font-family: verdana, arial, helvetica, sans-serif;
	font-size: 5em;
	font-weight: bold;
	color: #0000b0;
}

input {
	font-size: 150%;
}

<td.zentriert {
	text-align: center;
	color: #0000b0;
}
img {
   width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}