HTML5/CSS3 sample code sharing to implement beautiful step-by-step registration and login form

There are now many step-by-step login and registration forms, mainly to improve the user experience. Users can selectively fill in the corresponding form information, so that users will not be deterred by seeing a bunch of forms. What I share with you today is a step-by-step registration and login form based on HTML5 and CSS3. Needless to say, it looks very beautiful. You will know just by looking at the DEMO.

Next we will take a look at the implementation process. The code is a bit complicated, mainly composed of HTML code, CSS3 code and Javascript code.

HTML code:

<form id="msform">
    <!-- progressbar -->
    <ul id="progressbar">
        <li>Account Setup</li>
        <li>Social Profiles</li>
        <li>Personal Details</li>
    </ul>
    <!-- fieldsets -->
    <fieldset>
        <h2>Create your account</h2>
        <h3>This is step 1</h3>
        <input type="text" name="email" placeholder="Email" />
        <input type="password" name="pass" placeholder="Password" />
        <input type="password" name="cpass" placeholder="Confirm Password" />
        <input type="button" name="next" value="Next" />
    </fieldset>
    <fieldset>
        <h2>Social Profiles</h2>
        <h3>Your presence on the social network</h3>
        <input type="text" name="twitter" placeholder="Twitter" />
        <input type="text" name="facebook" placeholder="Facebook" />
        <input type="text" name="gplus" placeholder="Google Plus" />
        <input type="button" name="previous" value="Previous" />
        <input type="button" name="next" value="Next" />
    </fieldset>
    <fieldset>
        <h2>Personal Details</h2>
        <h3>We will never sell it</h3>
        <input type="text" name="fname" placeholder="First Name" />
        <input type="text" name="lname" placeholder="Last Name" />
        <input type="text" name="phone" placeholder="Phone" />
        <textarea name="address" placeholder="Address"></textarea>
        <input type="button" name="previous" value="Previous" />
        <input type="submit" name="submit" value="Submit" />
    </fieldset></form>

The HTML code looks like a lot, but it is very simple. It mainly describes a form.

CSS code:

/*form styles*/#msform {
    width: 400px;
    margin: 50px auto;
    text-align: center;
    position: relative;
}#msform fieldset {
    background: white;
    border: 0 none;
    border-radius: 3px;
    box-shadow: 0 0 15px 1px rgba(0, 0, 0, 0.4);
    padding: 20px 30px;

    box-sizing: border-box;
    width: 80%;
    margin: 0 10%;    /*stacking fieldsets above each other*/
    position: absolute;
}/*Hide all except first fieldset*/#msform fieldset:not(:first-of-type) {
    display: none;
}/*inputs*/#msform input, #msform textarea {
    padding: 15px;
    border: 1px solid #ccc;
    border-radius: 3px;
    margin-bottom: 10px;
    width: 100%;
    box-sizing: border-box;
    font-family: montserrat;
    color: #2C3E50;
    font-size: 13px;
}/*buttons*/#msform .action-button {
    width: 100px;
    background: #27AE60;
    font-weight: bold;
    color: white;
    border: 0 none;
    border-radius: 1px;
    cursor: pointer;
    padding: 10px 5px;
    margin: 10px 5px;
}#msform .action-button:hover, #msform .action-button:focus {
    box-shadow: 0 0 0 2px white, 0 0 0 3px #27AE60;
}/*headings*/.fs-title {
    font-size: 15px;
    text-transform: uppercase;
    color: #2C3E50;
    margin-bottom: 10px;
}.fs-subtitle {
    font-weight: normal;
    font-size: 13px;
    color: #666;
    margin-bottom: 20px;
}/*progressbar*/#progressbar {
    margin-bottom: 30px;
    overflow: hidden;    /*CSS counters to number the steps*/
    counter-reset: step;
}#progressbar li {
    list-style-type: none;
    color: white;
    text-transform: uppercase;
    font-size: 9px;
    width: 33.33%;
    float: left;
    position: relative;
}#progressbar li:before {
    content: counter(step);
    counter-increment: step;
    width: 20px;
    line-height: 20px;
    display: block;
    font-size: 10px;
    color: #333;
    background: white;
    border-radius: 3px;
    margin: 0 auto 5px auto;
}/*progressbar connectors*/#progressbar li:after {
    content: '';
    width: 100%;
    height: 2px;
    background: white;
    position: absolute;
    left: -50%;
    top: 9px;
    z-index: -1; 
    /*put it behind the numbers*/}
    #progressbar li:first-child:after {    
    /*connector not needed before the first step*/
    content: none; 
}
/*marking active/completed steps green*/
/*The number of the step and the connector before it = green*/
#progressbar li.active:before,  
#progressbar li.active:after{
    background: #27AE60;
    color: white;
}

Here we just posted the CSS code for rendering the form, which makes our form look very fresh and natural. Another point to note is that here we use the :before attribute of CSS3.

The last is the Javascript code, which can realize the step jump of the registration form.

Javascript code:

var current_fs, next_fs, previous_fs; //fieldsets
var left, opacity, scale; //fieldset properties which we will animate
var animating; //flag to prevent quick multi-click glitches

$(".next").click(function(){
    if(animating) return false;
    animating = true;

    current_fs = $(this).parent();
    next_fs = $(this).parent().next();

    //activate next step on progressbar using the index of next_fs
    $("#progressbar li").eq($("fieldset").index(next_fs)).addClass("active");

    //show the next fieldset
    next_fs.show(); 
    //hide the current fieldset with style
    current_fs.animate({opacity: 0}, {
        step: function(now, mx) {
            //as the opacity of current_fs reduces to 0 - stored in "now"
            //1. scale current_fs down to 80%
            scale = 1 - (1 - now) * 0.2;
            //2. bring next_fs from the right(50%)
            left = (now * 50)+"%";
            //3. increase opacity of next_fs to 1 as it moves in
            opacity = 1 - now;
            current_fs.css({'transform': 'scale('+scale+')'});
            next_fs.css({'left': left, 'opacity': opacity});
        }, 
        duration: 800, 
        complete: function(){
            current_fs.hide();
            animating = false;
        }, 
        //this comes from the custom easing plugin
        easing: 'easeInOutBack'
    });
});

$(".previous").click(function(){
    if(animating) return false;
    animating = true;

    current_fs = $(this).parent();
    previous_fs = $(this).parent().prev();

    //de-activate current step on progressbar
    $("#progressbar li").eq($("fieldset").index(current_fs)).removeClass("active");

    //show the previous fieldset
    previous_fs.show(); 
    //hide the current fieldset with style
    current_fs.animate({opacity: 0}, {
        step: function(now, mx) {
            //as the opacity of current_fs reduces to 0 - stored in "now"
            //1. scale previous_fs from 80% to 100%
            scale = 0.8 + (1 - now) * 0.2;
            //2. take current_fs to the right(50%) - from 0%
            left = ((1-now) * 50)+"%";
            //3. increase opacity of previous_fs to 1 as it moves in
            opacity = 1 - now;
            current_fs.css({'left': left});
            previous_fs.css({'transform': 'scale('+scale+')', 'opacity': opacity});
        }, 
        duration: 800, 
        complete: function(){
            current_fs.hide();
            animating = false;
        }, 
        //this comes from the custom easing plugin
        easing: 'easeInOutBack'
    });
});

$(".submit").click(function(){
    return false;
})

Here we can see that using jQuery code becomes very simple. There are mainly 3 events: next, previous, and submit. At the same time, jQuery is used to achieve the animation effect of fading in and out during next and previous. Isn’t it very charming? Finally you can also download the source code.

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