Bootstrap Code
Output
<!DOCTYPE html>
<html>
<head>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" integrity="sha512-dTfge/zgoMYpP7QbHy4gWMEGsbsdZeCXz7irItjcC3sPUFtf0kuFbDz/ixG7ArTxmDjLXDmezHubeNikyKGVyQ==" crossorigin="anonymous">
    <script src="https://netdna.bootstrapcdn.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
    <script type='text/javascript' src='//code.jquery.com/jquery-1.8.3.js'></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.5.0/css/bootstrap-datepicker3.min.css">
    <script type='text/javascript' src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.5.0/js/bootstrap-datepicker.min.js"></script>

    <meta name="viewport" content="width=device-width, initial-scale=1.0">

<style>
.inputstl { 
    padding: 9px; 
    border: solid 1px #2C6E8E; 
    outline: 0; 
    background: -webkit-gradient(linear, left top, left 25, from(#FFFFFF), color-stop(4%, #93C5DD), to(#FFFFFF)); 
    background: -moz-linear-gradient(top, #FFFFFF, #93C5DD 1px, #FFFFFF 25px); 
    box-shadow: rgba(0,0,0, 0.1) 0px 0px 8px; 
    -moz-box-shadow: rgba(0,0,0, 0.1) 0px 0px 8px; 
    -webkit-box-shadow: rgba(0,0,0, 0.1) 0px 0px 8px; 

    } 

.datepicker-dropdown {
  top: 0;
  left: 0;
  padding: 4px;
  background-color: #2C6E8E;
  border-radius: 10px;
}
.datepicker table {
  margin: 0;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;

}

.datepicker table tr td,
.datepicker table tr th {
  text-align: center;
  width: 30px;
  height: 30px;
  border-radius: 4px;
  border: none;
  color: #FFFFFF;
}

.datepicker table tr td.day:hover,
.datepicker table tr td.focused {
  background: #555555;
  cursor: pointer;
}
.datepicker table tr td.old,
.datepicker table tr td.new {
  color: #FF8000;
}

.datepicker table tr td.today {
  color: #000000;
  background-color: #FFA953;
  border-color: #FFB76F;
}
.datepicker table tr td.today:hover {
  color: #FFFFFF;
  background-color: #884400;
  border-color: #f59e00;
}
.datepicker table tr td.active:active,
.datepicker table tr td.active.highlighted:active,
.datepicker table tr td.active.active,
.datepicker table tr td.active.highlighted.active,
.open > .dropdown-toggle.datepicker table tr td.active,
.open > .dropdown-toggle.datepicker table tr td.active.highlighted {
  color: #ffffff;
  background-color: #419841;
  border-color: #285e8e;
}


.datepicker table tr td.active:active:hover,
.datepicker table tr td.active.highlighted:active:hover,
.datepicker table tr td.active.active:hover,
.datepicker table tr td.active.highlighted.active:hover,
.open > .dropdown-toggle.datepicker table tr td.active:hover,
.open > .dropdown-toggle.datepicker table tr td.active.highlighted:hover,
.datepicker table tr td.active:active:focus,
.datepicker table tr td.active.highlighted:active:focus,
.datepicker table tr td.active.active:focus,
.datepicker table tr td.active.highlighted.active:focus,
.open > .dropdown-toggle.datepicker table tr td.active:focus,
.open > .dropdown-toggle.datepicker table tr td.active.highlighted:focus,
.datepicker table tr td.active:active.focus,
.datepicker table tr td.active.highlighted:active.focus,
.datepicker table tr td.active.active.focus,
.datepicker table tr td.active.highlighted.active.focus,
.open > .dropdown-toggle.datepicker table tr td.active.focus,
.open > .dropdown-toggle.datepicker table tr td.active.highlighted.focus {
  color: #ffffff;
  background-color: #285e8e;
  border-color: #193c5a;
}
.datepicker table tr td.active:active,
.datepicker table tr td.active.highlighted:active,
.datepicker table tr td.active.active,
.datepicker table tr td.active.highlighted.active,
.open > .dropdown-toggle.datepicker table tr td.active,
.open > .dropdown-toggle.datepicker table tr td.active.highlighted {
  color: #ffffff;
  background-color: #3071a9;
  border-color: #285e8e;
}
.datepicker table tr td.active:active:hover,
.datepicker table tr td.active.highlighted:active:hover,
.datepicker table tr td.active.active:hover,
.datepicker table tr td.active.highlighted.active:hover,
.open > .dropdown-toggle.datepicker table tr td.active:hover,
.open > .dropdown-toggle.datepicker table tr td.active.highlighted:hover,
.datepicker table tr td.active:active:focus,
.datepicker table tr td.active.highlighted:active:focus,
.datepicker table tr td.active.active:focus,
.datepicker table tr td.active.highlighted.active:focus,
.open > .dropdown-toggle.datepicker table tr td.active:focus,
.open > .dropdown-toggle.datepicker table tr td.active.highlighted:focus,
.datepicker table tr td.active:active.focus,
.datepicker table tr td.active.highlighted:active.focus,
.datepicker table tr td.active.active.focus,
.datepicker table tr td.active.highlighted.active.focus,
.open > .dropdown-toggle.datepicker table tr td.active.focus,
.open > .dropdown-toggle.datepicker table tr td.active.highlighted.focus {
  color: #ffffff;
  background-color: #285e8e;
  border-color: #193c5a;
}
.datepicker .datepicker-switch {
  width: 145px;
  
}
.datepicker .datepicker-switch:hover,
.datepicker .prev:hover,
.datepicker .next:hover,
.datepicker tfoot tr th:hover {
  background: #50A2C9;
}

</style>
   
</style>

<script type='text/javascript'>
$(function(){
    $('.col-sm-4.date').datepicker({
    orientation: "left bottom",
    forceParse: false,
    autoclose: true,
    todayHighlight: true,
    toggleActive: true

});
});

</script>

</head>

<body>
<div class="container">
<h1>Bootstrap datepicker in form</h1>
    <form class="form-horizontal" role="form">
      <div class="form-group">
        <label for="name1" class="col-sm-2 control-label">Name:</label>
        <div class="col-sm-5 input-group">
          <input type="email" class="form-control inputstl" id="name1" placeholder="Enter Your Full Name">
        </div>
      </div>
      <div class="form-group">
        <label for="gender1" class="col-sm-2 control-label">Gender:</label>
        <div class="col-sm-2 input-group">
        <select class="form-control inputstl" id="gender1">
          <option>Male</option>
          <option>Female</option>
        </select>          
          
        </div>
      </div>      
      <div class="form-group">
        <label for="email1" class="col-sm-2 control-label">Email:</label>
        <div class="col-sm-5 input-group">
          <input type="email" class="form-control inputstl" id="email1" placeholder="Enter Email">
        </div>
      </div>

      <div class="form-group">
        <label for="password1" class="col-sm-2 control-label">Password:</label>
        <div class="col-sm-3 input-group">
          <input type="password" class="form-control inputstl" id="password1" placeholder="Password here">
        </div>
      </div>

      <div class="form-group">
        <label for="dateofbirth" class="col-sm-2 control-label">Date of Birth:</label>
        <div class="col-sm-4 input-group date">
          <input type="text" class="form-control inputstl" id="dateofbirth" placeholder="Select Date"><span class="input-group-addon"><i class="glyphicon glyphicon-calendar"></i></span>
          
        </div>
      </div>            


      <div class="form-group">
        <label for="address1" class="col-sm-2 control-label">Address:</label>
        <div class="col-sm-5 input-group">
          <input type="email" class="form-control inputstl" id="address1" placeholder="Full Address">
        </div>
      </div>            


      
      <div class="form-group">
        <div class="col-sm-offset-2 col-sm-10">
          <div class="checkbox">
            <label>
              <input type="checkbox" class="inputstl"> Remember me
            </label>
          </div>
        </div>
      </div>
      <div class="form-group ">
        <div class="col-sm-offset-2 col-sm-4">
          <button type="submit" class="btn btn-lg btn-block btn-info">Create Account</button>
        </div>
      </div>
    </form>
   </div> 
</body>
</html>
Bootstrap datepicker in form
