Page loader

index.html

<div id="overlay"></div>
<div id="loader"></div> <img src="https://source.unsplash.com/category/nature/500x500"> <img src="https://source.unsplash.com/category/buildings/500x500"> <img src="https://source.unsplash.com/category/food/500x500"> <img src="https://source.unsplash.com/category/people/500x500"> <img src="https://source.unsplash.com/category/technology/500x500"> <img src="https://source.unsplash.com/category/objects/500x500"> <img src="https://source.unsplash.com/category/nature/500x500"> <img src="https://source.unsplash.com/category/buildings/500x500"> <img src="https://source.unsplash.com/category/food/500x500"> <img src="https://source.unsplash.com/category/people/500x500"> <img src="https://source.unsplash.com/category/technology/500x500">

page-loader.markdown

Page loader

A Pen by Sanath Pathiraja on CodePen.

License.

script.js

var loader = document.getElementById("loader"), overlay = document.getElementById("overlay").classList;
overlay.add("overlay");
document.onreadystatechange = function () {
    function f_loader() {
        loader.style.animationPlayState = "paused";
        loader.style.display = "none";
        overlay.remove("overlay");
    };
    if (document.readyState == "complete") {
        setTimeout(f_loader, 1000);
    };
};

style.css

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    background-color: rgba(0, 0, 0, 0.4);
    /*dim the background*/
}

#loader {
    width: 64px;
    height: 64px;
    position: absolute;
    top: 50%;
    margin-top: -32px;
    left: 50%;
    margin-left: -32px;
    border-top: 2px solid #e70814;
    -webkit-animation: rotate 0.7s linear infinite;
    -moz-animation: rotate 0.7s linear infinite;
    animation: rotate 0.7s linear infinite;
    border-radius: 50%;
}

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

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

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