.portfolio {
  display: flex;
  flex-wrap: wrap;
  min-width: 320px;
}

.portfolio h2 {
  flex-basis: 100%;
  text-align: center;
  margin: 50px auto 30px;
  text-transform: uppercase;
  font-size: 20px;
  letter-spacing: 2px;
  color: #111;
}
.card {
  width: 25%;
  overflow: hidden;
  position: relative;
}
.card .content {
  z-index: 2;
  width: 100%;
  position: absolute;
  bottom: -100px;
  transition: all 0.7s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px;
  box-sizing: border-box;
  min-height: 20px;
  background: #111;
}
.card .image {
  z-index: 1;
  height: 100%;
}
.card img {
  height: 100%;
  width: 100%;
  transition: all 0.5s ease;
  transform: scale(1.2);
}

.card:hover .content {
  bottom: 0px;
  color: #fff;
}

.card:hover .image img {
  transform: scale(1);
}

.card .content span:first-child {
  text-transform: uppercase;
  margin-bottom: 0px;
  font-weight: 700;
  letter-spacing: 1px;
  text-align: center;
  color: #fff;
  font-size: 16px;
}

.card .content span:last-child {
  font-size: 14px;
  color: #18cfab;
  text-align: center;
  font-weight: 700;
}


@media screen and (max-width: 768px) {
  .card {
  width: 50%;
  }
  .card .content {
    bottom: 0;
  }
}

@media screen and (max-width: 480px) {
  .card {
  width: 100%;
  }
}