.fondo-principal {
    background-image: url('../img/fondo-transver.png'); 
    background-size: cover;       
    background-position: center;   
    background-repeat: no-repeat;   
    background-attachment: fixed;   
    min-height: 100vh;
    width: 100%;
    display: flex;
    flex-direction: column;
}

.img-zoom-container {
    overflow: hidden;
    height: 250px;
    border-top-left-radius: 0.5rem;
    border-top-right-radius: 0.5rem;
  }

  .img-zoom {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
    display: block;
  }

  .img-zoom-container:hover .img-zoom {
    transform: scale(1.05);
  }

  .card {
    height: 100%;
    display: flex;
    flex-direction: column;
  }

  .card-body {
    flex-grow: 1;
  }
.titulo-actividades {
  font-size: 2.5rem; 
  font-weight: bold; 
  text-align: center; 
  color: #2c3e50; 
  margin-bottom: 20px;
  position: relative;
}

.titulo-actividades::after {
  content: '';
  display: block;
  width: 100px;
  height: 4px;
  background-color: #e74c3c; 
  margin: 10px auto 0 auto;
  border-radius: 2px;
}