style.css

/* Always set the map height explicitly to define the size of the div
  * element that contains the map. */
  #map {
    height: 80%;
  }
  img#Cat{
    height: 20%;
    max-width: 25%;
  }

  html {
    background-image: url("loveofmylife.png");
    background-color: black;
  }
  /* Optional: Makes the sample page fill the window. */
   html, body {
    height: 90%;  
      max-width: 90%;
      margin-left: auto;
      margin-right: auto;
  }
  h1 {
    background-color: rgb(182, 216, 205);
    box-shadow: 0px 2px 10px rgba(178, 208, 226, 0.973);
    font-size: 25px;
    font-weight: bold;
    text-align: center;
    width: 420px;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }
  
  h2 {
    background-color: azure;
    box-shadow: 0px 2px 10px rgba(171, 240, 181, 0.973);
    padding: 10px;
    width: 1080px;
    max-width: 100%;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
  }