اثر شناور گرادیان کارت CSS

<div class="card">
  <div class="content">
    <p class="heading">Card Hover Effect
    </p><p class="para">
      Lorem ipsum dolor sit amet, consectetur adipisicing elit. Modi
      laboriosam at voluptas minus culpa deserunt delectus sapiente
      inventore pariatur
    </p>
    <button class="btn">Read more</button>
  </div>
</div>

.card {
  position: relative;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  width: 320px;
  -webkit-box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
          box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  padding: 32px;
  overflow: hidden;
  border-radius: 10px;
  -webkit-transition: all 0.5s cubic-bezier(0.23, 1, 0.320, 1);
  transition: all 0.5s cubic-bezier(0.23, 1, 0.320, 1);
}


/* Visit https://democoding.in/ for more free css animation */

.content {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: start;
      -ms-flex-align: start;
          align-items: flex-start;
  gap: 20px;
  color: #e8e8e8;
  -webkit-transition: all 0.5s cubic-bezier(0.23, 1, 0.320, 1);
  transition: all 0.5s cubic-bezier(0.23, 1, 0.320, 1);
}

.content .heading {
  font-weight: 700;
  font-size: 32px;
}

.content .para {
  line-height: 1.5;
}

.content .btn {
  color: #e8e8e8;
  text-decoration: none;
  padding: 10px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  background: linear-gradient(-45deg, #f89b29 0%, #ff0f7b 100% );
  border-radius: 5px;
  -webkit-box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
          box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}

.card::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(-45deg, #f89b29 0%, #ff0f7b 100% );
  z-index: -1;
  -webkit-transition: all 0.5s cubic-bezier(0.23, 1, 0.320, 1);
  transition: all 0.5s cubic-bezier(0.23, 1, 0.320, 1);
}

.card:hover::before {
  height: 100%;
}

.card:hover {
  -webkit-box-shadow: none;
          box-shadow: none;
}

.card:hover .btn {
  color: #212121;
  background: #e8e8e8;
}

.content .btn:hover {
  outline: 2px solid #e8e8e8;
  background: transparent;
  color: #e8e8e8;
}

.content .btn:active {
  -webkit-box-shadow: none;
          box-shadow: none;
}