How to fix html page footer

/* Sticky footer styles
-------------------------------------------------- */
 
html,
body {
  height: 100%;
  /* The html and body elements cannot have any padding or margin. */
}
 
/* Wrapper for page content to push down footer */
#wrap {
  min-height: 100%;
  height: auto !important;
  height: 100%;
  /* Negative indent footer by it's height */
  margin: 0 auto -60px;
}
 
/* Set the fixed height of the footer here */
#push,
#footer {
  height: 60px;
}
#footer {
  background-color: #f5f5f5;
}
 
/* Lastly, apply responsive CSS fixes as necessary */
@media (max-width: 767px) {
  #footer {
    margin-left: -20px;
    margin-right: -20px;
    padding-left: 20px;
    padding-right: 20px;
  }
}