*{
  margin: 0;
  padding: 0;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
}
.topic {
  display: none;
}
/* body {
  min-width: 768px;
  overflow: auto;
} */
ul {
  list-style: none;
}
/*h1{
  font-size: 2.5rem;
  font-family: 'Montserrat';
  font-weight: normal;
  color: #444;
  text-align: center;
  margin: 2rem 0;
}*/
.header{
    text-align: center;
    color: #9C9C9C;
    padding-top: 50px;
    padding-bottom: 50px;
}
/* body{background-color: #24252d} */
/* .wrapper{
  width: 90%;
  margin: 0 auto;
  max-width: 80rem;
} */

.cols{
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  /* -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center; */
}

.col{
  width: 506px;
  height: 320px;
  margin-right: 40px;
  margin-bottom: 40px;
  cursor: pointer;
}
.col:nth-child(3n) {
  margin-right: 0;
}

@media screen and (max-width: 1792px){
  .col{
    width: calc(33.333333% - 2rem);
  }
}

@media screen and (max-width: 1200px){
  .col{
    width: calc(50% - 40px);
  }
  .col:nth-child(3n) {
    margin-right: 40px;
  }
}

@media screen and (max-width: 768px){
  .col{
    width: 100%;
    /* margin: 0 0 2rem 0; */
  }
}
.container{
  -webkit-transform-style: preserve-3d;
          transform-style: preserve-3d;
	-webkit-perspective: 1000px;
	        perspective: 1000px;
}

.front,
.back{
  background-size: cover;
	background-position: center;
	-webkit-transition: -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
	transition: -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
	-o-transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
	transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
	transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1), -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
	-webkit-backface-visibility: hidden;
	        backface-visibility: hidden;
	text-align: center;
	min-height: 320px;
	height: auto;
	border-radius: 10px;
	color: #fff;
	font-size: 1.5rem;
}

.back{
  background: #cedce7;
  background: -webkit-linear-gradient(45deg,  #cedce7 0%,#596a72 100%);
  background: -o-linear-gradient(45deg,  #cedce7 0%,#596a72 100%);
  background: linear-gradient(45deg,  #cedce7 0%,#596a72 100%);
}
.back p {
  /* width: 150px;               */
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 8;
  overflow: hidden;
}
.back a{
  display: inline-block;
  margin-top: 20px;
  text-decoration: none;
  /* color: rgba(32, 130, 227, 0.8); */
  padding: 10px 20px;
  color: #ffffff;
  background-color: #3DA5FA;
  border-radius: 4px;
  font-size: 14px;
}
.back a:hover {
  /* color: rgba(32, 130, 227, 1); */
  background-color: #64b7fb;
}
.front:after{
	position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    width: 100%;
    height: 100%;
    content: '';
    display: block;
    opacity: .6;
    background-color: #000;
    -webkit-backface-visibility: hidden;
            backface-visibility: hidden;
    border-radius: 10px;
}
.container:hover .front,
.container:hover .back{
    -webkit-transition: -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
    transition: -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
    -o-transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
    transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
    transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1), -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
}

.back{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
}

.inner{
    -webkit-transform: translateY(-50%) translateZ(60px) scale(0.94);
    transform: translateY(-50%) translateZ(60px) scale(0.94);
    top: 50%;
    position: absolute;
    left: 0;
    width: 100%;
    padding: 2rem;
    font-size: .7em;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    outline: 1px solid transparent;
    -webkit-perspective: inherit;
    perspective: inherit;
    z-index: 2;
    line-height: 26px;
}

.container .back{
    -webkit-transform: rotateY(180deg);
            transform: rotateY(180deg);
    -webkit-transform-style: preserve-3d;
            transform-style: preserve-3d;
}

.container .front{
    -webkit-transform: rotateY(0deg);
            transform: rotateY(0deg);
    -webkit-transform-style: preserve-3d;
            transform-style: preserve-3d;
}

.container:hover .back{
  -webkit-transform: rotateY(0deg);
          transform: rotateY(0deg);
  -webkit-transform-style: preserve-3d;
          transform-style: preserve-3d;
}

.container:hover .front{
  -webkit-transform: rotateY(-180deg);
          transform: rotateY(-180deg);
  -webkit-transform-style: preserve-3d;
          transform-style: preserve-3d;
}

.front .inner p{
  font-size: 2rem;
  margin-bottom: 2rem;
  position: relative;
  line-height: 40px;
}

.front .inner p:after{
  content: '';
  width: 4rem;
  height: 3px;
  position: absolute;
  background: #C6D4DF;
  display: block;
  left: 0;
  right: 0;
  margin: 0 auto;
  bottom: -1.25rem;
}

.front .inner span{
  color: rgba(255,255,255,0.7);
  font-family: 'Montserrat';
  font-weight: 300;
}