<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<div class="custom_body">
<div class="container">
<div class="row">
<div class="login_box">
<section class="main-box">
<form>
<div class="input-box">
<span class="input-group-addon i_icon"><i class="glyphicon glyphicon-user"></i></span>
<input id="email" type="text" class="form-control input_layout" name="email" placeholder="Email">
</div>
<div class="input-box">
<span class="input-group-addon i_icon"><i class="glyphicon glyphicon-lock"></i></span>
<input id="password" type="password" class="form-control input_layout" name="password" placeholder="Password">
</div>
</form>
<button type="button" class="btn btn-default btn_style">LOGIN</button>
</section>
</div>
</div>
</div>
</div>
.custom_body {
background: linear-gradient(135deg, rgba(72, 214, 36, 0.98) 0%, rgba(56, 99, 255, 1) 107%, rgba(26, 35, 147, 1) 122%, rgba(111, 237, 46, 1) 100%);
float: left;
width: 100%;
}
.login_box {
margin:0 auto;
max-width: 400px;
min-width: 320px;
width: 100%;
}
.input-box {
float: left;
margin-bottom: 10px;
text-align: left;
width: 100%;
}
.i_icon {
border: medium none;
border-radius: 0;
color: #3965a0;
float: left;
padding: 12px;
top: 32px;
width: 40px;
}
.input_layout {
border: medium none;
border-radius: 0;
float: left;
height: 40px;
margin: 0;
padding: 0 10px;
width: 89%;
}
.main-box {
background: rgba(255, 251, 251, 0.41) none repeat scroll 0 0;
float: left;
margin-bottom: 100px;
margin-top: 100px;
padding: 50px 15px;
width: 100%;
border: 1px solid #fff;
}
.btn_style {
background-color: rgba(57, 101, 160, 1);
color: #fff;
padding: 10px 0;
width: 100%;
border: none;
}
.btn_style:hover {
background-color: rgba(57, 101, 160, 1);
color: #ffffff;
}