#hr-titulo {
    margin-top: 5px;
    border-top: 2px solid #ff4f4f;
    width: 60%;
}

.img-hover-box {
  width: 100%;
  height: 170px;
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  transition: transform 0.25s ease;
}
.img-hover-box:hover {
  transform: scale(1.05);
}
.img-thumbnail {
    box-shadow: 5px 5px 3px #ccc;
}

.cajas {
	 margin-top: 30px;
}
	
	
	


@media (max-width: 1199px) {
   h4 {
	    font-size: 15px;
	}
}
@media (max-width: 991px) {
   h4 {
	    font-size: 12px;
	}
}
@media (max-width: 767px) {
   #div-titulo {
	    margin-top: 70px;
	}
   h4 {
	    font-size: 18px;
	}
	.cajas {
       margin-top: 30px;
       width: 50%;
       display: table;
       margin-right: auto;
       margin-left: auto;
	}
}