<div class="button">
    <a>
        <span>Upload Now</span>
        <svg class="load" version="1.1"x="0px" y="0px" width="30px" height="30px" viewBox="0 0 40 40" enable-background="new 0 0 40 40">
            <path opacity="0.3" fill="#fff" d="M20.201,5.169c-8.254,0-14.946,6.692-14.946,14.946c0,8.255,6.692,14.946,14.946,14.946
            s14.946-6.691,14.946-14.946C35.146,11.861,28.455,5.169,20.201,5.169z M20.201,31.749c-6.425,0-11.634-5.208-11.634-11.634
            c0-6.425,5.209-11.634,11.634-11.634c6.425,0,11.633,5.209,11.633,11.634C31.834,26.541,26.626,31.749,20.201,31.749z"/>
            <path fill="#fff" d="M26.013,10.047l1.654-2.866c-2.198-1.272-4.743-2.012-7.466-2.012h0v3.312h0
            C22.32,8.481,24.301,9.057,26.013,10.047z">
            <animateTransform attributeType="xml"
            attributeName="transform"
            type="rotate"
            from="0 20 20"
            to="360 20 20"
            dur="0.5s"
            repeatCount="indefinite"/>
            </path>
        </svg>
        <svg class="check" xmlns="http://www.w3.org/2000/svg" width="30" height="30" viewBox="0 0 24 24">
            <path d="M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z"/>
        </svg>
    </a>
    <div>
        <span></span>
    </div>
</div>
@primary: #3f82d7;
@success: #28e470;
@light: #d3d7e0;

body {
	background: #eef0f5;
	font-family: Arial;	
	font-size: 14px;
}

.button {
  svg {
    display: none;
    position: absolute;
    left: 50%;
    top: 50%;
    margin: -15px 0 0 -15px;
    fill: #fff;
  }
  div {
    span {
      position: absolute;
      background: @success;
      height: 4px;
      left: 0;
      top: 0;
      width: 0;
      display: block;
      border-radius: 2px;
    }
    height: 4px;
    margin: -2px 0 0 0;
    position: absolute;
    top: 50%;
    left: 71px;
    right: 25px;
    background: @light;
    display: none;
    border-radius: 2px;
  }
  a {
    span {
      cursor: pointer;
      display: block;
    }
    position: relative;
    display: block;
    background: @primary;
    z-index: 2;
    line-height: 56px;
    height: 56px;
    border-radius: 28px;
    width: 100%;
    text-align: center;
    color: #fff;
    box-shadow: 0 2px 6px rgba(170, 185, 200, 0.4);
  }
	border-radius: 28px;
  position: absolute;
  left: 50%;
  top: 50%;
	display: block;
  background: #fff;
	width: 150px;
  box-shadow: 0 2px 6px rgba(170, 185, 200, 0.4);
  -webkit-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}
View Compiled
$(document).ready(function() {
	
	$(".button a span").click(function() {
		var btn = $(this).parent().parent();
		var loadSVG = btn.children("a").children(".load");
		var loadBar = btn.children("div").children("span");
		var checkSVG = btn.children("a").children(".check");
		
		btn.children("a").children("span").fadeOut(200, function() {
			btn.children("a").animate({
				width: 56	
			}, 100, function() {
				loadSVG.fadeIn(300);
				btn.animate({
					width: 320	
				}, 200, function() {
					btn.children("div").fadeIn(200, function() {
						loadBar.animate({
							width: "100%"	
						}, 2000, function() {
							loadSVG.fadeOut(200, function() {
								checkSVG.fadeIn(200, function() {
									setTimeout(function() {
										btn.children("div").fadeOut(200, function() {
											loadBar.width(0);
											checkSVG.fadeOut(200, function() {
												btn.children("a").animate({
													width: 150	
												});
												btn.animate({
													width: 150
												}, 300, function() {
													btn.children("a").children("span").fadeIn(200);
												});
											});
										});
									}, 2000);	
								});
							});
						});
					});
				});
			});
		});
		
	});
	
});

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

  1. https://code.jquery.com/jquery-3.1.1.min.js