#preloader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #f5f5f5;
    /* change if the mask should be a color other than white */
    z-index: 1000;
    /* makes sure it stays on top */
}

.pre-container {
    position: absolute;
    left: 50%;
    top: 50%;
    bottom: auto;
    right: auto;
    -webkit-transform: translateX(-50%) translateY(-50%);
    transform: translateX(-50%) translateY(-50%);
    text-align: center;
}

.spinner {
    width: 40px;
    height: 40px;
    position: relative;
    margin: 100px auto;
}

.double-bounce1,
.double-bounce2 {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #0395DE; /* Original: #ffbf00 */;
    opacity: 0.6;
    position: absolute;
    top: 0;
    left: 0;
    -webkit-animation: bounce 2.0s infinite ease-in-out;
    animation: bounce 2.0s infinite ease-in-out;
}

.double-bounce2 {
    -webkit-animation-delay: -1.0s;
    animation-delay: -1.0s;
}

@-webkit-keyframes bounce {
    0%,
    100% {
        -webkit-transform: scale(0.0)
    }
    50% {
        -webkit-transform: scale(1.0)
    }
}

@keyframes bounce {
    0%,
    100% {
        transform: scale(0.0);
        -webkit-transform: scale(0.0);
    }
    50% {
        transform: scale(1.0);
        -webkit-transform: scale(1.0);
    }
}