.overlay {
    width: 100%;
    height: 100%;
    position: fixed; /* Stay in place */
    z-index: 9999999; /* Sit on top */
    left: 0;
    top: 0;
    background-color: rgb(0,0,0); /* Black fallback color */
    background-color: rgba(0,0,0, 0.8); /* Black w/opacity */
    overflow-x: hidden; /* Disable horizontal scroll */
    transition: 0.5s;
    display: none;
}

.overlay-content {
    position: relative;
    top: 25%; /* 25% from the top */
    text-align: center;
    margin-left: auto;
    margin-right: auto;
    margin-top: 30px;
    color: #fff;
}

.loader {
    border: 12px solid #f3f3f3;
    border-radius: 50%;
    border-top: 12px solid #E17525;
    width: 120px;
    height: 120px;
    -webkit-animation: spin 2s linear infinite;
    animation: spin 2s linear infinite;
    display: inline-block;
}

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

    100% {
        -webkit-transform: rotate(360deg);
    }
}

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

    100% {
        transform: rotate(360deg);
    }
}