.dtpa { position: fixed; top: 0; left: 0; right: 0; bottom: 0;
         background: rgba(0, 0, 0, 0.4); 
         z-index: 2000; 
         -webkit-user-select: none; 
         -moz-user-select: none;
         -ms-user-select: none; 
         user-select: none; 
}
.loader {
  position: fixed;
  left: 50%;
  top: 50%;
  z-index: 2;
  width: 150px;
  height: 150px;
  margin: -75px 0 0 -75px;
  border: 16px solid #f3f3f3;
  border-radius: 50%;
  border-top: 16px solid blue;
  border-right: 16px solid green;
  border-bottom: 16px solid red;
  border-left: 16px solid yellow;
  width: 120px;
  height: 120px;
  -webkit-animation: spin 2s linear infinite;
  animation: spin 2s linear infinite;  
  
}

.lds-facebook {
  display: inline-block;
  position: relative;
  width: 80px;
  height: 80px;
  left: 50%;
  top :50%;
}
.lds-facebook div {
  display: inline-block;
  position: absolute;
  left: 8px;
  width: 16px;
  background: #fff;
  animation: lds-facebook 1.2s cubic-bezier(0, 0.5, 0.5, 1) infinite;
}
.lds-facebook div:nth-child(1) {
  left: 8px;
  animation-delay: -0.24s;
}
.lds-facebook div:nth-child(2) {
  left: 32px;
  animation-delay: -0.12s;
}
.lds-facebook div:nth-child(3) {
  left: 56px;
  animation-delay: 0;
}
@keyframes lds-facebook {
  0% {
    top: 8px;
    height: 64px;
  }
  50%, 100% {
    top: 24px;
    height: 32px;
  }
}


@-webkit-keyframes spin {
  0% { -webkit-transform: rotate(0deg); }
  100% { -webkit-transform: rotate(360deg); }
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Add animation to "page content" */
.animate-bottom {
  position: relative;
  -webkit-animation-name: animatebottom;
  -webkit-animation-duration: 1s;
  animation-name: animatebottom;
  animation-duration: 1s
}

@-webkit-keyframes animatebottom {
  from { bottom:-100px; opacity:0 }
  to { bottom:0px; opacity:1 }
}

@keyframes animatebottom {
  from{ bottom:-100px; opacity:0 }
  to{ bottom:0; opacity:1 }
}