body {
  margin-top: 20px;
  margin-left: 10%;
  margin-right: 10%;
  font-family: Arial, Helvetica, sans-serif;
  padding:0px;
  padding-top: 100px;
  padding-bottom: 50px;
}

#header {
  /* Positioning */
  position: fixed;         /* Anchors it to the browser viewport */
  top: 0;
  left: 10%;                 /* Starts it at the left edge */
  z-index: 100;            /* Ensures it stays above other content */
  
  /* Layout & Size */
  width: 80%;             /* Spans full width */
  padding: 15px 0;         /* Padding */
  
  /* Styling */
  background-color: white; /* Vibrant background */
  text-align: center;
  border-bottom: 3px dashed lightgray;
}

#footer {
  /* Positioning */
  position: fixed;         /* Anchors it to the browser viewport */
  bottom: 0;               /* Aligns it to the bottom edge */
  left: 10%;                 /* Starts it at the left edge */
  z-index: 100;            /* Ensures it stays above other content */
  
  /* Layout & Size */
  width: 80%;             /* Spans full width */
  padding: 15px 0;         /* Padding */
  
  /* Styling */
  background-color: white; /* Vibrant background */
  text-align: center;
  border-top: 3px dashed lightgray;
}

#title {
  font-size: xx-large;
}

#mains {
  background-color: white;
  padding-top: 30px;
  padding-bottom: 30px;
}