.fab {  
  padding: 20px;  
text-align: center;  
  margin: 5px 2px;  
  font-size: 30px;  
  width: 70px;  
}  
.fa-facebook {  
  background: #3B5998;  
  color: white;  
}  
.fa-twitter {  
  background: #55ACEE;  
  color: white;  
}  
.fa-instagram {  
  background: #125688;  
  color: white;  
}  
.fa-youtube {  
  background: #bb0000;  
  color: white;  
} 
.fa:hover {  
    opacity: 0.9;  
}  
#page-content {
  flex: 1 0 auto;
}
#sticky-footer {
  flex-shrink: none;
}