Форма для сайта на Bootstrap — стиль 9

Подробное описание и демонстрация работы блока «Формы» для сайта под номером №9 для библиотеки Bootstrap. Html и CSS код для реализации блока forms на сайте как на изображении.

<div class="form-bg">
    <div class="container">
        <div class="row">
            <div class="col-md-offset-3 col-md-6">
                <form class="form-horizontal">
                    <div class="form-content">
                        <div class="header">Sign Up</div>
                        <div class="form-group">
                            <div class="col-sm-12">
                                <input class="form-control" id="exampleInputName2" placeholder="Full Name" type="text">
                            </div>
                        </div>
                        <div class="form-group">
                            <div class="col-sm-12">
                                <input class="form-control" id="exampleInputName2" placeholder="Email" type="email">
                            </div>
                        </div>
                        <div class="form-group">
                            <div class="col-sm-12">
                                <input class="form-control" id="exampleInputName2" placeholder="Password" type="password">
                            </div>
                        </div>
                        <div class="form-group">
                            <div class="col-sm-12">
                                <input class="form-control" id="exampleInputName2" placeholder="Username" type="text">
                            </div>
                        </div>
                        <div class="form-group">
                            <div class="radio">
                                <div class="col-sm-4">
                                    <label>Gender : </label>
                                </div>
                                <div class="col-sm-4">
                                    <input id="radio-1" name="radio" type="radio">
                                    <label for="radio-1" class="radio-label">Male</label>
                                </div>
                                <div class="col-sm-4">
                                    <input id="radio-2" name="radio" type="radio">
                                    <label for="radio-2" class="radio-label">Female</label>
                                </div>
                            </div>
                        </div>
                        <div class="checkbox form-group">
                            <div class="col-sm-12">
                                <input id="checkbox-1" class="checkbox-custom" name="checkbox-1" type="checkbox" checked="">
                                <label for="checkbox-1" class="checkbox-custom-label">I accept the terms and privacy policy.</label>
                            </div>
                        </div>
                        <div class="form-group">
                            <div class="col-md-12">
                                <button type="submit" class="btn btn-default">Register</button>
                            </div>
                        </div>
                    </div>
                </form>
            </div>
        </div>
    </div>
</div>

form{
    font-family: 'Roboto Mono', monospace;
    background: #d09ef5;
    padding: 8px;
}
 
.form-horizontal .header{
    font-size: 28px;
    font-weight: 800;
    letter-spacing: 2px;
    color: #fff;
    text-transform: uppercase;
    padding: 40px;
    margin-bottom: 30px;
    border-bottom: 1px solid #fff;
}
 
.form-horizontal .form-content{
    border: 1px solid #fff;
}
 
.form-group{
    padding: 0 40px;
}
 
.form-horizontal .form-control{
    padding: 10px;
    height: 50px;
    font-size: 14px;
    color: #fff;
    border: 1px solid #ccc;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
}
 
.form-horizontal .form-control:focus{
    border-color: #fff;
    box-shadow: none;
}
 
.form-horizontal .control-label{
    font-size: 17px;
    color: #fff;
    position: absolute;
    top: 5px;
    left: 27px;
    text-align: center;
}
 
.form-horizontal .radio label{
    padding-left: 0;
    font-size: 14px;
}
 
.form-horizontal .checkbox{
    margin-top: 10px;
    margin-bottom: 10px;
}
 
.form-horizontal .checkbox label{
    font-size: 14px;
}
 
.form-horizontal .btn{
    display: block;
    width: 100%;
    font-size: 14px;
    color: #4e4e4e;
    margin: 10px 0;
    border: 2px solid #fff;
    background: transparent;
    border-radius: 0;
    padding: 10px 25px;
    position: relative;
    overflow: hidden;
    z-index: 1;
    transition: all 0.5s ease 0s;
}
 
.form-horizontal .btn:hover{
    border-color: #fff;
    color: #333;
}
 
.form-horizontal .btn:before{
    content: "";
    width: 100%;
    height: 100%;
    background: #fff;
    position: absolute;
    top: 100%;
    left: 0;
    z-index: -1;
    transition: all 0.5s ease 0s;
}
 
.form-horizontal .btn:hover:before{
    top: 0;
}
 
.form-horizontal .radio input[type="radio"]{
    position: absolute;
    opacity: 0;
}
 
.form-horizontal .radio input[type="radio"] + .radio-label:before{
    content: "";
    display: inline-block;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #f4f4f4;
    border: 1px solid #b4b4b4;
    position: relative;
    top: 5px;
    margin-right: 16px;
    text-align: center;
    -webkit-transition: all 250ms ease 0s;
    transition: all 250ms ease 0s;
}
 
.form-horizontal .radio input[type="radio"]:checked + .radio-label:before{
    background: #d09ef5;
    box-shadow: inset 0 0 0 2px #f4f4f4;
}
 
.radio input[type="radio"]:focus + .radio-label:before{
    outline: none;
    border-color: #d09ef5;
}
 
.form-horizontal .checkbox-custom{
    opacity: 0;
    position: absolute;
}
 
.form-horizontal .checkbox-custom,
.form-horizontal .checkbox-custom-label{
    display: inline-block;
    vertical-align: middle;
    margin: 5px;
    cursor: pointer;
}
 
.form-horizontal .checkbox-custom-label{
    position: relative;
}
 
.form-horizontal .checkbox-custom + .checkbox-custom-label:before{
    content: "";
    display: inline-block;
    width: 15px;
    height: 15px;
    line-height:15px;
    text-align: center;
    background: transparent;
    border: 1px solid #fff;
    vertical-align: middle;
    margin-right: 10px;
}
 
.form-horizontal .checkbox-custom:checked + .checkbox-custom-label:before{
    content: "\f00c";
    font-family: "Font Awesome 5 Free"; font-weight: 900;
    font-size: 10px;
    color: #fff;
    text-align: center;
    vertical-align: middle;
}
 
.form-horizontal .checkbox label{
    padding-left: 0;
}
 
.form-control::-moz-placeholder{
    color:#fff;
}