#portfolio {
  margin-bottom: 50px;
}

#portfolio .portfolio-item {
  margin: 20px 0;
}

#portfolio .portfolio-item .portfolio-link {
  display: block;
  position: relative;
  margin: 0 auto;
  max-width: 600px;
}

#portfolio .portfolio-item .portfolio-link .caption {
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: 0;
  background: rgba(0,0,0,.6);
  -webkit-transition: all ease .5s;
  -moz-transition: all ease .5s;
  transition: all ease .5s;
}

#portfolio .portfolio-item .portfolio-link .caption:hover {
  opacity: 1;
}

#portfolio .portfolio-item .portfolio-link .caption .caption-content {
  position: absolute;
  top: 40%;
  width: 100%;
  height: 20px;
  margin-top: -12px;
  text-align: center;
  font-size: 14px;
  color: #fff;
}

#portfolio .portfolio-item .portfolio-link .caption .caption-content i {
  margin-top: -12px;
}

#portfolio .portfolio-item .portfolio-link .caption .caption-content h3,
#portfolio .portfolio-item .portfolio-link .caption .caption-content h4 {
  margin: 0;
}

#portfolio * {
  z-index: 2;
}

#portfolio hr {
  border-top: 2px dashed #fff;
  width: 50%;
}

@media(min-width:767px) {
    #portfolio .portfolio-item {
        margin: 20px 0;
    }
}