#loader {
      position: fixed;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      transform: -webkit-translate(-50%, -50%);
      transform: -moz-translate(-50%, -50%);
      transform: -ms-translate(-50%, -50%);
  }

.spinner {

    width: 70px;
    height: 50px;
    font-size: 20px;
}

.spinner>div {
    background-color: #333;
    height: 100%;
    width: 6px;
    display: inline-block;

    -webkit-animation: sk-stretchdelay 1.2s infinite ease-in-out;
    animation: sk-stretchdelay 1.2s infinite ease-in-out;
}

.spinner .rect2 {
    -webkit-animation-delay: -1.1s;
    animation-delay: -1.1s;
}

.spinner .rect3 {
    -webkit-animation-delay: -1.0s;
    animation-delay: -1.0s;
}

.spinner .rect4 {
    -webkit-animation-delay: -0.9s;
    animation-delay: -0.9s;
}

.spinner .rect5 {
    -webkit-animation-delay: -0.8s;
    animation-delay: -0.8s;
}

@-webkit-keyframes sk-stretchdelay {

    0%,
    40%,
    100% {
        -webkit-transform: scaleY(0.4)
    }

    20% {
        -webkit-transform: scaleY(1.0)
    }
}

@keyframes sk-stretchdelay {

    0%,
    40%,
    100% {
        transform: scaleY(0.4);
        -webkit-transform: scaleY(0.4);
    }

    20% {
        transform: scaleY(1.0);
        -webkit-transform: scaleY(1.0);
    }
}

/* 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
    }
}

#myDiv {
    display: none;
    text-align: center;
}