Loading Style snake

<!DOCTYPE html>
<html>
<head>
	<title>BOOTSTRAP4 DATEPICKER | par NGLESSON</title>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<meta name="keyword" content="BOOTSTRAP4 DATEPICKER">
	<meta name="author" content="Mezgani said">
	<meta name="copyright" content="NGLESSON">
	<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet">
	<link href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.3.0/css/datepicker.css" rel="stylesheet">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
	<link href="style.css" rel="stylesheet">
</head>
<body>
	<div class="container">
		<span></span>
		<span></span>
		<span></span>
		<span></span>
		<span></span>
	</div>     
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>                       
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>  
</body>
</html>
.container {
    width: 144px;
    height: 100px;
    position: relative;
    margin: 0 auto;
}
.container span {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    position: absolute;
    bottom: 0;
    left: 0;
    display: block;
    background-color: #9B5986;
     animation: Loading 3s infinite ease-in-out; 
}
.container span:nth-of-type(2) { left: 30px; animation-delay: .2s; }
.container span:nth-of-type(3) { left: 60px; animation-delay: .4s; }
.container span:nth-of-type(4) { left: 90px; animation-delay: .6s; }
.container span:last-of-type { left: 120px; animation-delay: .8s; }

@keyframes Loading {
    0% { height: 20px; transform: translateY(0); background-color: #9B59B6; }
    50% { height: 20px; transform: translateY(40px); background-color: #3498D6; }
    100% { height: 20px; transform: translateY(0); background-color: #9B59B6; }
}

                                    
Ajouter une legende dans un formulaire

Ajouter une legende dans un formulaire

Animation 3d social icones avec css3

Animation 3d social icones avec css3

Arrows Defense Game

Arrows Defense Game

Cards box with title

Cards box with title

Carousel Bootstrap4

Carousel Bootstrap4

Comment intégrer yamli dans une input

Comment intégrer yamli dans une input

Form login 03

Form login 03

Input range slider HTML style02

Input range slider HTML style02

Planète animée style01

Planète animée style01

Timeline style04

Timeline style04

Timeline style08

Timeline style08

input radio checkbox b4 style

input radio checkbox b4 style