Tips for smoothly applying a class to an image for seamless transitions, avoiding any awkward clunkiness

Check out my work on jsfiddle I understand that the image may not be visible, but I'll do my best to describe it. The header smoothly animates as I scroll down, but the image abruptly changes size instead of smoothly resizing. I want it to gradually decrease in size along with the header for a smoother effect.

I attempted to add transition: all 0.8s ease; to the header-image class, but it did not work as expected.

Any assistance would be greatly welcomed.

HTML:

Answer №1

The default value for the height of the image was not configured.

$(document).ready(function() { 
    $(window).scroll(function() {
        if ($(this).scrollTop() > 1) {  
            $('header').addClass("scroll");
            $('.header-image').addClass("header-image-scroll");
        } else {
            $('header').removeClass("scroll");
            $('.header-image').removeClass("header-image-scroll");
        }
    });
});
body {
font-family: 'Open Sans', sans-serif;
background-color: #f3f3f3;
    color: #666;
    margin: 0px;
    padding: 0px;
}

#Page {
    padding-top: 100px;
}

header {
background-color: #1c1c1b;
font-family: 'Century gothic';
font-size: 180%;
height: 100px;
    width: 100%;
    border-bottom: solid;
    border-bottom-color: #009641;
    border-bottom-width: 5px;
    position: fixed;
    line-height: 50px;
    z-index: 1000;
    overflow: hidden;
    transition: all 0.8s ease;
}

.header-image {
    align-content: center;
    height: 200px;
    transition: all .5s ease;
}

.scroll {
    height: 80px; 
    font-size: 180%;
}

.header-image-scroll {
    height: 80px;
    transition: all .5s ease;
}

#center-column {
    background-color: white;
    width: 1080px;
    height: 100%;
    box-shadow: 0px 1px 5px #888888;
    margin: 0 auto;
    padding-bottom: 10px;
}

nav {
    
}

nav ul {
    text-align: center;
    display: table;
    margin: auto;
}

nav li {
    display: table-cell;
    vertical-align: middle;
    /*display: inline;*/
    padding: 0 10px;
}

nav li a {
    color: #009641;
    text-decoration: none;
}

nav li a:hover {
    color: #e2030e;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!DOCTYPE html>
 
    <body id="chesters">
        
        <header>
            <nav>
                <ul>
                <li><a href="Menu.html">Menu</a></li>
                <li><a href="Burritos.html">Burritos</a></li>
                    <li><a href="index.html"><img class="header-image" src="http://wallpaper-gallery.net/images/image/image-13.jpg"></a></li>
                <li><a href="Contact.html">Contact Us</a></li>
                <li><a href="About.html">About Us</a></li>   
                </ul>
            </nav>
        </header>
        
    <div id="Page">
             [Content Removed for Brevity]
    <p>
    </div> <!-- Page -->
        
    </body>

Answer №2

It's important to note that in addition to adding transition:all 0.8s ease to achieve the desired effect, setting the initial height of the element is also necessary.

This is because the default value of height is set to auto, making it impossible to animate smoothly.

Check out the demo here: https://example.com/demo

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