#title-box {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1;
  
  width: 100%;
  text-align: center;
  background-color: lightgreen;
}

#content {
  position: absolute;
  top: 120px;
}

h2{
  text-align: center;
}

img {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 75%;
}