html, body {
    height: 100%;
    margin: 0;
  }

.esp {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

footer {
  background: linear-gradient(to bottom, #3ca250, #218838);
    color: white;             
    padding: 10px 0;          
    text-align: center;       
    font-size: 0.9rem;        
  }
  
  .footer a {
    color: #adb5bd;           
    text-decoration: none;    
  }
  
  .footer a:hover {
    color: #f8f9fa;           
    text-decoration: underline;
  }
  
  .footer .social-icons a {
    margin: 0 5px;            
    font-size: 1.2rem;        
  }