*, *:before, *:after {
    -webkit-box-sizing: border-box;
            box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
 
  body {
  
    font-family: 'Open Sans', Helvetica, Arial, sans-serif;
  }
  
  .cont {
    position: relative;
    overflow: hidden;
    height: 100%;
    padding: 100px 70px 60px 70px;
  }
  .cont__inner {
    position: relative;
    height: 100%;
  }
  .cont__inner:hover .el__bg:after {
    opacity: 1;
  }
  
  .el {
    position: absolute;
    left: 0;
    top: 0;
    width: 24%;
    height: 100%;
    background: #252525;
    -webkit-transition: width 0.7s, opacity 0.6s 0.7s, z-index 0s 1.3s, -webkit-transform 0.6s 0.7s;
    transition: width 0.7s, opacity 0.6s 0.7s, z-index 0s 1.3s, -webkit-transform 0.6s 0.7s;
    transition: transform 0.6s 0.7s, width 0.7s, opacity 0.6s 0.7s, z-index 0s 1.3s;
    transition: transform 0.6s 0.7s, width 0.7s, opacity 0.6s 0.7s, z-index 0s 1.3s, -webkit-transform 0.6s 0.7s;
    will-change: transform, width, opacity;
  }
  .el:not(.s--active) {
    cursor: pointer;
  }
  .el__overflow {
    overflow: hidden;
    position: relative;
    height: 100%;
  }
  .el__inner {
    overflow: hidden;
    position: relative;
    height: 100%;
    -webkit-transition: -webkit-transform 1s;
    transition: -webkit-transform 1s;
    transition: transform 1s;
    transition: transform 1s, -webkit-transform 1s;
  }
  .cont.s--inactive .el__inner {
    -webkit-transform: translate3d(0, 100%, 0);
            transform: translate3d(0, 100%, 0);
  }
  .el__bg {
    position: relative;
    width: calc(100vw - 140px);
    height: 100%;
    -webkit-transition: -webkit-transform 0.6s 0.7s;
    transition: -webkit-transform 0.6s 0.7s;
    transition: transform 0.6s 0.7s;
    transition: transform 0.6s 0.7s, -webkit-transform 0.6s 0.7s;
    will-change: transform;
  }
  .el__bg:before {
    content: "";
    position: absolute;
    left: 0;
    top: -5%;
    width: 100%;
    height: 110%;
    background-size: cover;
    background-position: center center;
    -webkit-transition: -webkit-transform 1s;
    transition: -webkit-transform 1s;
    transition: transform 1s;
    transition: transform 1s, -webkit-transform 1s;
    -webkit-transform: translate3d(0, 0, 0) scale(1);
            transform: translate3d(0, 0, 0) scale(1);
  }
  .cont.s--inactive .el__bg:before {
    -webkit-transform: translate3d(0, -100%, 0) scale(1.2);
            transform: translate3d(0, -100%, 0) scale(1.2);
  }
  .el.s--active .el__bg:before {
    -webkit-transition: -webkit-transform 0.8s;
    transition: -webkit-transform 0.8s;
    transition: transform 0.8s;
    transition: transform 0.8s, -webkit-transform 0.8s;
  }
  .el__bg:after {
    content: "";
    z-index: 1;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    opacity: 0;
    -webkit-transition: opacity 0.5s;
    transition: opacity 0.5s;
  }
  .cont.s--el-active .el__bg:after {
    -webkit-transition: opacity 0.5s 1.4s;
    transition: opacity 0.5s 1.4s;
    opacity: 1 !important;
  }
  .el__preview-cont {
    z-index: 2;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            /*justify-content: center;
            align-items: center;*/
    -webkit-box-align: center;
        -ms-flex-align: center;
            
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    -webkit-transition: all 0.3s 1.2s;
    transition: all 0.3s 1.2s;
  }
  .cont.s--inactive .el__preview-cont {
    opacity: 0;
    -webkit-transform: translateY(10px);
            transform: translateY(10px);
  }
  .cont.s--el-active .el__preview-cont {
    opacity: 0;
    -webkit-transform: translateY(30px);
            transform: translateY(30px);
    -webkit-transition: all 0.5s;
    transition: all 0.5s;
  }
 
  .el__content {
    z-index: -1;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    padding: 30px;
    opacity: 0;
    pointer-events: none;
    -webkit-transition: all 0.1s;
    transition: all 0.1s;
  }
  .el.s--active .el__content {
    z-index: 2;
    opacity: 1;
    pointer-events: auto;
    -webkit-transition: all 0.5s 1.4s;
    transition: all 0.5s 1.4s;
  }
  .el__text {
    text-transform: uppercase;
    font-size: 40px;
    color: #fff;
  }
  .el__close-btn {
    z-index: -1;
    position: absolute;
    right: 10px;
    top: 10px;
    width: 40px;
    height: 40px;
    opacity: 0;
    pointer-events: none;
    -webkit-transition: all 0s 0.45s;
    transition: all 0s 0.45s;
    cursor: pointer;
  }
  .el.s--active .el__close-btn {
    z-index: 5;
    opacity: 1;
    pointer-events: auto;
    -webkit-transition: all 0s 1.4s;
    transition: all 0s 1.4s;
  }
  .el__close-btn:before, .el__close-btn:after {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 100%;
    height: 8px;
    margin-top: -4px;
    background: #fff;
    opacity: 0;
    -webkit-transition: opacity 0s;
    transition: opacity 0s;
  }
  .el.s--active .el__close-btn:before, .el.s--active .el__close-btn:after {
    opacity: 1;
  }
  .el__close-btn:before {
    -webkit-transform: rotate(45deg) translateX(100%);
            transform: rotate(45deg) translateX(100%);
  }
  .el.s--active .el__close-btn:before {
    -webkit-transition: all 0.3s 1.4s cubic-bezier(0.72, 0.09, 0.32, 1.57);
    transition: all 0.3s 1.4s cubic-bezier(0.72, 0.09, 0.32, 1.57);
    -webkit-transform: rotate(45deg) translateX(0);
            transform: rotate(45deg) translateX(0);
  }
  .el__close-btn:after {
    -webkit-transform: rotate(-45deg) translateX(100%);
            transform: rotate(-45deg) translateX(100%);
  }
  .el.s--active .el__close-btn:after {
    -webkit-transition: all 0.3s 1.55s cubic-bezier(0.72, 0.09, 0.32, 1.57);
    transition: all 0.3s 1.55s cubic-bezier(0.72, 0.09, 0.32, 1.57);
    -webkit-transform: rotate(-45deg) translateX(0);
            transform: rotate(-45deg) translateX(0);
  }
  .el__index {
    overflow: hidden;
    position: absolute;
    left: 0;
    bottom: -0px;
    width: 100%;
    height: 100%;
    min-height: 250px;
    text-align: center;
    font-size: 20vw;
    line-height: 0.85;
    font-weight: bold;
    -webkit-transition: opacity 0.3s 1.4s, -webkit-transform 0.5s;
    transition: opacity 0.3s 1.4s, -webkit-transform 0.5s;
    transition: transform 0.5s, opacity 0.3s 1.4s;
    transition: transform 0.5s, opacity 0.3s 1.4s, -webkit-transform 0.5s;
    -webkit-transform: translate3d(0, 1vw, 0);
            transform: translate3d(0, 1vw, 0);
  }
  .el:hover .el__index {
    -webkit-transform: translate3d(0, 0, 0);
            transform: translate3d(0, 0, 0);
  }
  .cont.s--el-active .el__index {
    -webkit-transition: opacity 0.3s, -webkit-transform 0.5s;
    transition: opacity 0.3s, -webkit-transform 0.5s;
    transition: transform 0.5s, opacity 0.3s;
    transition: transform 0.5s, opacity 0.3s, -webkit-transform 0.5s;
    opacity: 0;
  }
  .el__index-back, .el__index-front {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
  }
  .el__index-back {
    color: #2f3840;
    opacity: 0;
    -webkit-transition: opacity 0.25s 0.25s;
    transition: opacity 0.25s 0.25s;
  }
  .el:hover .el__index-back {
    -webkit-transition: opacity 0.25s;
    transition: opacity 0.25s;
    opacity: 1;
  }
  .el__index-overlay {
    overflow: hidden;
    position: relative;
    -webkit-transform: translate3d(0, 100%, 0);
            transform: translate3d(0, 100%, 0);
    -webkit-transition: -webkit-transform 0.5s 0.1s;
    transition: -webkit-transform 0.5s 0.1s;
    transition: transform 0.5s 0.1s;
    transition: transform 0.5s 0.1s, -webkit-transform 0.5s 0.1s;
    color: transparent;
  }
  .el__index-overlay:before {
    content: attr(data-index);
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    color: #fff;
    -webkit-transform: translate3d(0, -100%, 0);
            transform: translate3d(0, -100%, 0);
    -webkit-transition: -webkit-transform 0.5s 0.1s;
    transition: -webkit-transform 0.5s 0.1s;
    transition: transform 0.5s 0.1s;
    transition: transform 0.5s 0.1s, -webkit-transform 0.5s 0.1s;
  }
  .el:hover .el__index-overlay {
    -webkit-transform: translate3d(0, 0, 0);
            transform: translate3d(0, 0, 0);
  }
  .el:hover .el__index-overlay:before {
    -webkit-transform: translate3d(0, 0, 0);
            transform: translate3d(0, 0, 0);
  }
  .el:nth-child(1) {
    -webkit-transform: translate3d(0%, 0, 0);
            transform: translate3d(0%, 0, 0);
    -webkit-transform-origin: 50% 50%;
            transform-origin: 50% 50%;
  }
  .cont.s--el-active .el:nth-child(1):not(.s--active) {
    -webkit-transform: scale(0.5) translate3d(0%, 0, 0);
            transform: scale(0.5) translate3d(0%, 0, 0);
    opacity: 0;
    -webkit-transition: opacity 0.95s, -webkit-transform 0.95s;
    transition: opacity 0.95s, -webkit-transform 0.95s;
    transition: transform 0.95s, opacity 0.95s;
    transition: transform 0.95s, opacity 0.95s, -webkit-transform 0.95s;
  }
  .el:nth-child(1) .el__inner {
    -webkit-transition-delay: 0s;
            transition-delay: 0s;
  }
  .el:nth-child(1) .el__bg {
    -webkit-transform: translate3d(0%, 0, 0);
            transform: translate3d(0%, 0, 0);
  }
  .el:nth-child(1) .el__bg:before {
    -webkit-transition-delay: 0s;
            transition-delay: 0s;
    /*background-image: url("a3.png");*/
    
  }
  .el:nth-child(2) {
    -webkit-transform: translate3d(105.2083333333%, 0, 0);
            transform: translate3d(105.2083333333%, 0, 0);
    -webkit-transform-origin: 155.2083333333% 50%;
            transform-origin: 155.2083333333% 50%;
  }
  .cont.s--el-active .el:nth-child(2):not(.s--active) {
    -webkit-transform: scale(0.5) translate3d(105.2083333333%, 0, 0);
            transform: scale(0.5) translate3d(105.2083333333%, 0, 0);
    opacity: 0;
    -webkit-transition: opacity 0.95s, -webkit-transform 0.95s;
    transition: opacity 0.95s, -webkit-transform 0.95s;
    transition: transform 0.95s, opacity 0.95s;
    transition: transform 0.95s, opacity 0.95s, -webkit-transform 0.95s;
  }
  .el:nth-child(2) .el__inner {
    -webkit-transition-delay: 0.1s;
            transition-delay: 0.1s;
  }
  .el:nth-child(2) .el__bg {
    -webkit-transform: translate3d(-19.2%, 0, 0);
            transform: translate3d(-19.2%, 0, 0);
  }
  .el:nth-child(2) .el__bg:before {
    -webkit-transition-delay: 0.1s;
            transition-delay: 0.1s;
    /*background-image: url("a4.png");*/
    
  }
  .el:nth-child(3) {
    -webkit-transform: translate3d(210.4166666667%, 0, 0);
            transform: translate3d(210.4166666667%, 0, 0);
    -webkit-transform-origin: 260.4166666667% 50%;
            transform-origin: 260.4166666667% 50%;
  }
  .cont.s--el-active .el:nth-child(3):not(.s--active) {
    -webkit-transform: scale(0.5) translate3d(210.4166666667%, 0, 0);
            transform: scale(0.5) translate3d(210.4166666667%, 0, 0);
    opacity: 0;
    -webkit-transition: opacity 0.95s, -webkit-transform 0.95s;
    transition: opacity 0.95s, -webkit-transform 0.95s;
    transition: transform 0.95s, opacity 0.95s;
    transition: transform 0.95s, opacity 0.95s, -webkit-transform 0.95s;
  }
  .el:nth-child(3) .el__inner {
    -webkit-transition-delay: 0.2s;
            transition-delay: 0.2s;
  }
  .el:nth-child(3) .el__bg {
    -webkit-transform: translate3d(-38.4%, 0, 0);
            transform: translate3d(-38.4%, 0, 0);
  }
  .el:nth-child(3) .el__bg:before {
    -webkit-transition-delay: 0.2s;
            transition-delay: 0.2s;
    /*background-image: url("a5.png");*/
    
  }
  .el:nth-child(4) {
    -webkit-transform: translate3d(315.625%, 0, 0);
            transform: translate3d(315.625%, 0, 0);
    -webkit-transform-origin: 365.625% 50%;
            transform-origin: 365.625% 50%;
  }
  .cont.s--el-active .el:nth-child(4):not(.s--active) {
    -webkit-transform: scale(0.5) translate3d(315.625%, 0, 0);
            transform: scale(0.5) translate3d(315.625%, 0, 0);
    opacity: 0;
    -webkit-transition: opacity 0.95s, -webkit-transform 0.95s;
    transition: opacity 0.95s, -webkit-transform 0.95s;
    transition: transform 0.95s, opacity 0.95s;
    transition: transform 0.95s, opacity 0.95s, -webkit-transform 0.95s;
  }
  .el:nth-child(4) .el__inner {
    -webkit-transition-delay: 0.3s;
            transition-delay: 0.3s;
  }
  .el:nth-child(4) .el__bg {
    -webkit-transform: translate3d(-57.6%, 0, 0);
            transform: translate3d(-57.6%, 0, 0);
  }
  .el:nth-child(4) .el__bg:before {
    -webkit-transition-delay: 0.3s;
            transition-delay: 0.3s;
    /*background-image: url("a1.png");*/
    
  }
  .el:nth-child(5) {
    -webkit-transform: translate3d(420.8333333333%, 0, 0);
            transform: translate3d(420.8333333333%, 0, 0);
    -webkit-transform-origin: 470.8333333333% 50%;
            transform-origin: 470.8333333333% 50%;
  }
  .cont.s--el-active .el:nth-child(5):not(.s--active) {
    -webkit-transform: scale(0.5) translate3d(420.8333333333%, 0, 0);
            transform: scale(0.5) translate3d(420.8333333333%, 0, 0);
    opacity: 0;
    -webkit-transition: opacity 0.95s, -webkit-transform 0.95s;
    transition: opacity 0.95s, -webkit-transform 0.95s;
    transition: transform 0.95s, opacity 0.95s;
    transition: transform 0.95s, opacity 0.95s, -webkit-transform 0.95s;
  }
  .el:nth-child(5) .el__inner {
    -webkit-transition-delay: 0.4s;
            transition-delay: 0.4s;
  }
  .el:nth-child(5) .el__bg {
    -webkit-transform: translate3d(-76.8%, 0, 0);
            transform: translate3d(-76.8%, 0, 0);
  }
  .el:nth-child(5) .el__bg:before {
    -webkit-transition-delay: 0.4s;
            transition-delay: 0.4s;
    /*background-image: url("a2.png");*/
    
  }
  .el:hover .el__bg:after {
    opacity: 0;
  }
  .el.s--active {
    z-index: 1;
    width: 100%;
    -webkit-transform: translate3d(0, 0, 0);
            transform: translate3d(0, 0, 0);
    -webkit-transition: width 0.7s 0.7s, z-index 0s, -webkit-transform 0.6s;
    transition: width 0.7s 0.7s, z-index 0s, -webkit-transform 0.6s;
    transition: transform 0.6s, width 0.7s 0.7s, z-index 0s;
    transition: transform 0.6s, width 0.7s 0.7s, z-index 0s, -webkit-transform 0.6s;
  }
  .el.s--active .el__bg {
    -webkit-transform: translate3d(0, 0, 0);
            transform: translate3d(0, 0, 0);
    -webkit-transition: -webkit-transform 0.6s;
    transition: -webkit-transform 0.6s;
    transition: transform 0.6s;
    transition: transform 0.6s, -webkit-transform 0.6s;
  }
  .el.s--active .el__bg:before {
    -webkit-transition-delay: 0.6s;
            transition-delay: 0.6s;
    -webkit-transform: scale(1.1);
            transform: scale(1.1);
  }
  
  .icon-link {
    position: absolute;
    left: 5px;
    bottom: 5px;
    width: 32px;
  }
  .icon-link img {
    width: 100%;
    vertical-align: top;
  }
  .icon-link--twitter {
    left: auto;
    right: 5px;
  }