#container {
background-color: black;
background-image: url('/files/content/tl-back01.jpg');
background-size: cover;
background-attachment: fixed;
}
.social-icon {
  font-size: 35px;
  width: 35px;
  height: 35px;
  display: inline-block;
  color: white; 
  transition: color 0.3s ease;
}

.social-icon:hover {
  color: red;
}