<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script> <script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <!------ Include the above in your HEAD tag ----------> <div class="container"> <div class="row"> <h2>Bootstrap Search Bar </h2> </div> <div class="row margin-top"> <div class="col-md"> <form class="form1"> <input type="text" placeholder="Serch..."> <a class="button-Serch"></a> </form> </div> <div class="col-md"> <form class="form2"> <input type="text" placeholder="Serch..."> <a class="button-Serch">Serch</a> </form> </div> <div class="col-md"> <form class="form3"> <input type="text" placeholder="Serch..."> <input id="search_submit" value="Rechercher" type="submit"> </form> </div> </div> </div>

body{background:#d9d9d9; color:#000;} h2{font-size:50px; text-align:center; display:block;width:100%; padding-bottom:50px;} .form1 .button-Serch { position: absolute; margin: auto; top: 0; right: 0; bottom: 0; left: 0; width: 40px; height: 40px; background: #00ACED; border-radius: 50%; transition: all 1s; z-index: 4; } .form1 .button-Serch:hover { cursor: pointer; } .form1 .button-Serch::before { content: ""; position: absolute; margin: auto; top: 11px; right: 0; bottom: 0; left: 11px; width: 12px; height: 2px; background: white; transform: rotate(45deg); transition: all .5s; } .form1 .button-Serch::after { content: ""; position: absolute; margin: auto; top: -5px; right: 0; bottom: 0; left: -5px; width: 16px; height: 16px; border-radius: 50%; border: 2px solid white; transition: all .5s; } .form1 input { position: absolute; margin: auto; top: 0; right: 0; bottom: 0; left: 0; width: 50px; height: 50px; outline: none; border: 1px solid #d9d9d9; background: #fff; color: #333; padding: 0 80px 0 20px; border-radius: 30px; transition: all 1s; opacity: 0; z-index: 5; font-weight: bolder; } .form1 input:hover { cursor: pointer; } .form1 input:focus { width: 300px; opacity: 1; cursor: text; } .form1 input:focus ~ .button-Serch { right: -250px; background: #151515; z-index: 6; } .form1 input:focus ~ .button-Serch::before { top: 0; left: 0; width: 25px; } .form1 input:focus ~ .button-Serch::after { top: 0; left: 0; width: 25px; height: 2px; border: none; background: white; border-radius: 0%; transform: rotate(-45deg); } .form1 input::placeholder { color: #333; opacity: 0.5; font-weight: bolder; } /***form 2****/ .form2 {position:relative;} .form2 input{ width:100% ; border:1px solid #d9d9d9; padding:10px 15px; border-radius:200px; box-shadow:none } .form2 .button-Serch{ right:0; top:1px; position: absolute; background:#00ACED; color:#fff !important; padding:10px 25px; border-radius:200px; transition:all ease-in-out 0.5s; cursor:pointer; } .form2 .button-Serch:hover{background:#333;} /***form 3**/ .form3 input[type="text"] { height: 60px; font-size: 20px; display: inline-block; font-weight: 100; border: none; outline: none; color: #555; padding: 3px; padding-right: 60px; width: 0px; position: absolute; top: 0; right: 0; background: none; z-index: 3; transition: width .4s cubic-bezier(0.000, 0.795, 0.000, 1.000); cursor: pointer; } .form3 input[type="text"]:focus:hover { border-bottom: 1px solid #BBB; } .form3 input[type="text"]:focus { width: 100%; z-index: 1; border-bottom: 1px solid #BBB; cursor: text; } .form3 input[type="submit"] { height: 67px; width: 63px; display: inline-block; color:red; float: right; background: url("https://img.icons8.com/metro/1600/search.png") center center no-repeat; background-size:35px 35px; text-indent: -10000px; border: none; position: absolute; top: 0; right: 0; z-index: 2; cursor: pointer; opacity: 0.4; cursor: pointer; transition: opacity .4s ease; } .form3 input[type="submit"]:hover { opacity: 0.8; }