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HTML

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CSS

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <form action="" id="contact-form" method="post">
        <fieldset>
            <legend>Formularz kontaktowy</legend>
            <div class="item">
                <input required type="text" name="firstName" id="firstName" title="Proszę podać swoje imię">
                <label for="firstName">Imię<em>*</em></label>                
            </div>
            <div class="item">
                <input required type="text" name="secondName" id="secondName" title="Proszę podać swoje nazwisko">
                <label for="secondName">Nazwisko<em>*</em></label>                
            </div>
            <div class="item">
                <input required type="email" name="email" id="email" title="Proszę podać swój adres e-mail">
                <label for="email">Email<em>*</em></label>                
            </div>
            <div class="item">
                <textarea required rows="10" cols="20" name="message" id="message" title="Wpisz treść swojej wiadomości"></textarea>
                <label for="message">Wiadomość<em>*</em></label>                
            </div>
            <input type="submit" class="send-button">          
        </fieldset>
    </form>
!

CSS 

              
                        #contact-form {
            margin: auto;
            width: 400px;
            max-width: 100%;
        }
        
        #contact-form legend {
            font-size: 24px;
        }
        
        #contact-form em {
            color: red;
        }
      
        #contact-form .item {
            position: relative;
            margin: 28px 0;
        }
        
        #contact-form input, #contact-form textarea {
            padding: 10px 35px;
            width: 100%;
            font-size: 20px;
            background: #efefef;
            border: none;
            box-sizing: border-box;
        }
        
        #contact-form label {
            opacity: 0.3;
            position: absolute;
            bottom: 0px;
            left: 5px;
            transition: 1s all;
            font-size: 20px;
            line-height: 40px;
        }
        
        #contact-form input:focus, #contact-form textarea:focus {
            border: 1px solid #666;
        }
        
        #contact-form input:focus + label, #contact-form input:valid + label {
            bottom: 40px;
            font-size: 16px;
            opacity: 0.7;
        }
        
        #contact-form input:valid {
            background-image: url('https://cdn0.iconfinder.com/data/icons/small-n-flat/24/678134-sign-check-128.png');
            background-repeat: no-repeat;
            background-size: 25px;
            background-position: 1% 50%;
            border: 2px solid #16FF84;
        }
        
        #contact-form textarea + label {
            top: 0;
        }
        
        #contact-form textarea:focus + label, #contact-form textarea:valid + label {
            top: -32px;
            font-size: 16px;
            opacity: 0.7;
        }
        
        #contact-form textarea:valid {
            border: 2px solid #16FF84;
        }
        
        #contact-form input[type="submit"] {
            border: none;
            background-image: none;
            background-color: #228822;
            color: #fff;
        }
        
        #contact-form input[type="submit"]:hover {
            cursor: pointer;
            background-color: #226622;
        }
!

JS
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999px

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