.marging div:not(.clearfix) {
}

body {
  background: #f6f6f6;
}
.col-md-6 {
}

.container-fluid {
  width: 100%;
  padding-right: 15px;
  padding-left: 15px;
  margin-right: auto;
  margin-left: auto;
  max-width: 90%;
  _width: 1370px;
}

.row .col-md-4:nth-child(3n)::after{
  display: block;
  content: " ";
  clear: both;
  height: 10px;
}

.block {
  border: 1px solid #e2e2e2;
  background: #fff;
  margin-bottom: 30px;
 
  padding: 0px 0px 0px 0;
  border-radius: 8px;
  text-align: center;
  overflow: hidden;
  position: relative;
}

.block .content {
  opacity: 0;
  background: rgba(0, 0, 0, 0.7);
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-content: center;
  justify-content: center;
  align-items: center;
  transition: all .3s ease-in-out;
}

.block:hover .content {
  opacity: 1;
}

.block.loading img {
  opacity: 0.6;
}

.block h3 {

  color: white;
}
.block p {
  color: white;
}
.block p a {
  border-radius: 50px;
  padding: 10px 20px;
}

.clearfix:before,
.clearfix:after,
.dl-horizontal dd:before,
.dl-horizontal dd:after,
.container:before,
.container:after,
.container-fluid:before,
.container-fluid:after,
.row:before,
.row:after,
.form-horizontal .form-group:before,
.form-horizontal .form-group:after,
.btn-toolbar:before,
.btn-toolbar:after,
.btn-group-vertical > .btn-group:before,
.btn-group-vertical > .btn-group:after,
.nav:before,
.nav:after,
.navbar:before,
.navbar:after,
.navbar-header:before,
.navbar-header:after,
.navbar-collapse:before,
.navbar-collapse:after,
.pager:before,
.pager:after,
.panel-body:before,
.panel-body:after,
.modal-footer:before,
.modal-footer:after {
  display: table;
  content: " ";
}
.clearfix:after,
.dl-horizontal dd:after,
.container:after,
.container-fluid:after,
.row:after,
.form-horizontal .form-group:after,
.btn-toolbar:after,
.btn-group-vertical > .btn-group:after,
.nav:after,
.navbar:after,
.navbar-header:after,
.navbar-collapse:after,
.pager:after,
.panel-body:after,
.modal-footer:after {
  clear: both;
}