.loader-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.9);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.loader {
  animation: rotate 1s infinite;  
  height: 50px;
  width: 50px;
}

.loader:before,
.loader:after {   
  border-radius: 50%;
  content: '';
  display: block;
  height: 20px;  
  width: 20px;
}
.loader:before {
  animation: ball1 1s infinite;  
  background-color: #ff3d00;
  box-shadow: 30px 0 0 #3d5afe;
  margin-bottom: 10px;
}
.loader:after {
  animation: ball2 1s infinite; 
  background-color: #00e676;
  box-shadow: 30px 0 0 #ffeb3b;
}

@keyframes rotate {
  0% { 
    transform: rotate(0deg) scale(0.8); 
  }
  50% { 
    transform: rotate(360deg) scale(1.2); 
  }
  100% { 
    transform: rotate(720deg) scale(0.8); 
  }
}

@keyframes ball1 {
  0% {
    box-shadow: 30px 0 0 #3d5afe;
  }
  50% {
    box-shadow: 0 0 0 #3d5afe;
    margin-bottom: 0;
    transform: translate(15px,15px);
  }
  100% {
    box-shadow: 30px 0 0 #3d5afe;
    margin-bottom: 10px;
  }
}

@keyframes ball2 {
  0% {
    box-shadow: 30px 0 0 #ffeb3b;
  }
  50% {
    box-shadow: 0 0 0 #ffeb3b;
    margin-top: -20px;
    transform: translate(15px,15px);
  }
  100% {
    box-shadow: 30px 0 0 #ffeb3b;
    margin-top: 0;
  }
}
@media (max-width: 768px) {
.form-horizontal .col-md-4 {
    text-align: left !important; 
}
.form-horizontal .col-md-8 {
    padding-top: 5px !important;
}
}
.card {
      width: 440px; 
      margin: auto;
    }
    .card-header {
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      font-weight: bold;
      text-align: center;
      color: #000;
    }
    .card-header a {
      margin-right: 10px; 
  }