#promo {
  text-align: center;
  padding: 40px;
  background: url(../../assets/img/univ01.jpg) no-repeat;
  background-size: cover;
  background-position: top;
}

.jumbotron {
}

#promo .jumbotron {
  border-radius: 20px;
  padding: 40px;
  background-color: rgba(0,0,0,0.52);
  /*max-width: 800px;*/
  /*margin: 100px;*/
}

@media (min-width: 300px) {
  #promo .jumbotron {
    padding: 0px;
    width: auto;
    margin: -9px;
  }
}

@media (min-width: 992px) {
  #mainnev {
    padding-left: 50px;
    padding-right: 50px;
  }
}

.nav-item {
  margin-right: 5px;
}

.img-fluid {
  /*margin-top: 10px;*/
  margin-left: 50px;
  border-radius: 15px;
}


/*---------------------------------*/
.hover-img {
  background-color: #000;
  color: #fff;
  display: inline-block;
  margin: 8px;
  max-width: 520px;
  min-width: 240px;
  overflow: hidden;
  position: relative;
  text-align: center;
  width: 100%;
}

.hover-img * {
  box-sizing: border-box;
  transition: all 0.45s ease;
}

.hover-img::before,
.hover-img::after {
  background-color: rgba(0, 0, 0, 0.5);
  border-top: 32px solid rgba(0, 0, 0, 0.5);
  border-bottom: 32px solid rgba(0, 0, 0, 0.5);
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  content: '';
  transition: all 0.3s ease;
  z-index: 1;
  opacity: 0;
  transform: scaleY(2);
}

.hover-img img {
  vertical-align: top;
  max-width: 100%;
  backface-visibility: hidden;
}

.hover-img figcaption {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  align-items: center;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.1em;
  opacity: 0;
  z-index: 2;
  transition-delay: 0.1s;
  font-size: 24px;
  font-family: sans-serif;
  font-weight: 400;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.hover-img:hover::before,
.hover-img:hover::after {
  transform: scale(1);
  opacity: 1;
}

.hover-img:hover > img {
  opacity: 0.7;
}

.hover-img:hover figcaption {
  opacity: 1;
}