#overlay {
    height: 200px;
    width: 350px;
    z-index: 10;
    background: rgba(141, 193, 136, 0.8);
    text-align: center;
    direction: rtl;
    padding: 10px;
    border-radius: 10px;
    display: none;
    position: absolute;
    float: left;
    left: 50%;
    top: 49%;
    transform: translate(-50%, -50%);
}

#loader {
    z-index: 1;
    width: 50px;
    height: 50px;
    margin: 35px 35% 0 0;
    border: 16px solid #f3f3f3;
    border-radius: 50%;
    border-top: 16px solid #3498db;
    -webkit-animation: spin 2s linear infinite;
    animation: spin 2s linear infinite;
}

@-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
    }
}