header {
    width: 100%;
    border-top: 5px solid #4ab9f4;
    background: #fff;
    position:fixed;
    z-index: 10;
  }
  header a:hover {
    text-decoration: none;
  }
  header .logo {
    height: 3.4375em;
    float: left;
    margin-right: 4.5em;
  }
  header .logo img {
    width: 6.4375em;
    height: 6.4375em;
    float: left;
  }
  header .logo:hover a {
    background: #131313;
    color: #fff;
  }
  header .menu_bar {
    display: none;
  }
  header nav {
    float: left;
  }
  header nav ul {
    list-style: none;
  }
  header nav ul li {
    float: left;
    font-family: "Open Sans";
    font-size: 1em;
    margin-top: 0.3125em;
    border-bottom: 0.3125em solid transparent;
  }
  header nav ul li ul {
    display: none;
  }
  header nav ul li a {
    display: block;
    padding: 0 1.25em;
    color: #302f2f;
    line-height: 2.8125em;
  }
  header nav ul li a span {
    display: none;
  }
  header nav ul li:hover {
    border-bottom: 5px solid  #4ab9f4;;
  }
  header nav ul li:hover a {
    color: #4ab9f4;
  }
  
  *, *:before, *:after{
    margin: 0;
    padding: 0;
    -webkit-box-sizing: border-box;
    -moz-box-sizing:border-box;
    box-sizing: border-box;
  }
  
  body{
    background: #f9f9f9;
    font-size: 16px;
    font-family: 'Raleway', sans-serif;
  }
  
  .main-title{
    color: #2d2d2d;
    text-align: center;
    text-transform: capitalize;
    padding: 0.7em 0;
  }
  
  .container{
    padding: 1em 0;
    float: left;
    width: 50%;
  }
  @media screen and (max-width: 640px){
    .container{
      display: block;
      width: 100%;
    }
  }
  
  @media screen and (min-width: 900px){
    .container{
      width: 33.33333%;
    }
  }
  
  .container .title{
    color: #1a1a1a;
    text-align: center;
    margin-bottom: 10px;
  }
  
  .content {
    position: relative;
    width: 90%;
    max-width: 400px;
    margin: auto;
    overflow: hidden;
  }
  
  .content .content-overlay {
    background: rgba(0, 0, 0, 0.796);
    position: absolute;
    height: 99%;
    width: 100%;
    left: 0;
    top: 0;
    bottom: 0;
    right: 0;
    opacity: 0;
    -webkit-transition: all 0.4s ease-in-out 0s;
    -moz-transition: all 0.4s ease-in-out 0s;
    transition: all 0.4s ease-in-out 0s;
  }
  
  .content:hover .content-overlay{
    opacity: 1;
  }
  
  .content-image{
    width: 100%;
  }
  
  .content-details {
    position: absolute;
    text-align: center;
    padding-left: 1em;
    padding-right: 1em;
    width: 100%;
    top: 50%;
    left: 50%;
    opacity: 0;
    -webkit-transform: translate(-50%, -50%);
    -moz-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    -webkit-transition: all 0.3s ease-in-out 0s;
    -moz-transition: all 0.3s ease-in-out 0s;
    transition: all 0.3s ease-in-out 0s;
  }
  
  .content:hover .content-details{
    top: 50%;
    left: 50%;
    opacity: 1;
  }
  
  .content-details h3{
    color: #fff;
    font-weight: 500;
    letter-spacing: 0.15em;
    margin-bottom: 0.5em;
    text-transform: uppercase;
  }
  
  .content-details p{
    color: #fff;
    font-size: 0.8em;
  }
  .fadeIn-bottom{
    top: 80%;
  }
  
  .fadeIn-top{
    top: 20%;
  }
  
  .fadeIn-left{
    left: 20%;
  }
  .fadeIn-right{
    left: 80%;
  }