html, body {
  height: 100%;
  width: 80%;
  background-image: linear-gradient(#2a2929, #266457);
  font-style:  normal;
  margin: auto;
}

img {
 width: 100%;
 display: block;
 margin: auto;
}

main {
background-color: #787878;
border: solid #000000;
margin: auto;
}
h1 {
border: solid #000000;
text-align: center;
}
  
footer {
  background: #000000;
  padding: 100px;
  color: #ebebeb;
  text-align: center;
 }