.loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #333333;
  z-index:100;
  opacity: 0.8;
  transition: opacity 0.75s, visibility 0.75s;
}

.loader--hidden {
  opacity: 0;
  visibility: hidden;
}

.loader::after {
  content: "";
  width: 75px;
  height: 75px;
  border: 15px solid #dddddd;
  border-top-color: #009578;
  border-radius: 100%;
  animation: loading 2s ease infinite;
}

@keyframes loading {
  from {
    transform: rotate(0turn);
  }
  to {
    transform: rotate(1turn);
  }
}
/* CSS for the button */
#ufcart {
  transition: background-color 0.3s ease;
  /*padding: 10px 20px; */
  /*background-color: #3498db; */
  /*color: #fff; */
  /*border: none; */
  /*border-radius: 4px; */
  /*cursor: pointer; */
}

#ufcart:hover {
  /*background-color: #2980b9;*/
  background-color: #FFFFFF;
}

#ufcart:active {
  content: "...";
  background-color: #FFFFFF;
  background: #FFFFFF;
  position: fixed;
  width: 100px;
  height: 100px;
  /*width: 100vw;*/
  /*height: 100vh;*/
  /*display: flex;*/
  align-items: center;
  justify-content: center;
  border-radius: 100%;
  opacity: 0.8;
  animation: loading 1.52s ease infinite;
}