main{
    text-align: center;
}
img{
    display: block; 
    margin: auto;
}
p {
    position: absolute;
    top: 50%;
    right: 50%;
}
header {
  position: sticky;
  top: 0px;
}
footer{
    position: relative;
    left: 20px;
}
a{ 
    position: fixed;
  bottom: 0;
  right: 0;
  width: 60px;
  border: 3px solid #ff0000;
}