.main-header {
  background-image: url("img/vista-bonelli.jpeg");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;
  margin-bottom: 32px;
}

.main-header .navbar {
  background-color: black;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 0 8px rgba(0,0,0,0.6);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  position: fixed;
  left:0; top:0; right:0;
  z-index: 999;
}

.main-header-content {
  padding: 102px 0 64px 0;
}

.main-header-content .btn-group .btn {
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(4px);
}

@media (min-width: 1200px) {
  .card-columns {
    column-count: 4;
  }
}

@media (min-width: 768px) and (max-width: 1199px) {
  .card-columns {
    column-count: 3;
  }
}

@media (min-width: 576px) and (max-width: 767px) {
  .card-columns {
    column-count: 2;
  }
}

/* ----------------------------------------------
 * Generated by Animista on 2020-9-23 23:43:32
 * Licensed under FreeBSD License.
 * See http://animista.net/license for more info. 
 * w: http://animista.net, t: @cssanimista
 * ---------------------------------------------- */

.scale-in-center {
  -webkit-animation: scale-in-center 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
  animation: scale-in-center 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}

/**
 * ----------------------------------------
 * animation scale-in-center
 * ----------------------------------------
 */
@-webkit-keyframes scale-in-center {
  0% {
    -webkit-transform: scale(0);
    transform: scale(0);
    opacity: 1;
  }
  100% {
    -webkit-transform: scale(1);
    transform: scale(1);
    opacity: 1;
  }
}
@keyframes scale-in-center {
  0% {
    -webkit-transform: scale(0);
    transform: scale(0);
    opacity: 1;
  }
  100% {
    -webkit-transform: scale(1);
    transform: scale(1);
    opacity: 1;
  }
}