.card-item {
    border-radius: 4px;
    box-shadow: 0 6px 10px rgba(0, 0, 0, 0.08), 0 0 6px rgba(0, 0, 0, 0.05);
    transition: 0.3s transform cubic-bezier(0.155, 1.105, 0.295, 1.12),
        0.3s box-shadow,
        0.3s -webkit-transform cubic-bezier(0.155, 1.105, 0.295, 1.12);
}
.card-item:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.12), 0 4px 8px rgba(0, 0, 0, 0.06);
}
.card-image {
    width: 100%;
    height: 280px;
    object-fit: fill;
    object-position: top;
}
@media screen and (max-width: 800px) {
    .card-image {
        width: 100%;
        height: 360px;
        object-fit: fill;
        object-position: top;
    }
}
@media screen and (max-width: 600px) {
    .card-image {
        width: 100%;
        height: 280px;
        object-fit: fill;
        object-position: top;
    }
}
.horizontal-flex {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
}
.horizontal-btn {
    flex: 0 0 auto;
}
/* Mark input boxes that gets an error on validation: */
input.invalid {
    background-color: #ffdddd;
}
/* Mark select boxes that gets an error on validation: */
select.invalid {
    background-color: #ffdddd;
}

/* Hide all steps by default: */
.tab {
    display: none;
}

/* Make circles that indicate the steps of the form: */
.step {
    height: 15px;
    width: 15px;
    line-height: 17px;
    margin: 0 70px;
    background-color: #bbbbbb;
    border: none;
    border-radius: 50%;
    display: inline-block;
    opacity: 0.3;
    text-align: center;
}

/* Mark the active step: */
.step.active {
    opacity: 1;
}

/* Mark the steps that are finished and valid: */
.step.finish {
    background-color: #04aa6d;
}

#topBtn {
  display: none;
  position: fixed;
  bottom: 20px;
  right: 30px;
  z-index: 99;
  font-size: 18px;
  border: none;
  outline: none;
  background-color: lightseagreen;
  color: white;
  cursor: pointer;
  padding: 15px;
  border-radius: 4px;
}

#topBtn:hover {
  background-color: #555;
}