Design Glassmorphism Website in HTML & CSS

Glassmorphism is a UI design in which the elements have a glass-like translucent effect which lets us see the background. To create the UI effect in HTML and CSS we need to judiciously apply proper styling for the effect that looks uniform for all the elements in the UI. The following things need to be considered to achieve the glassy look.

Preview

Prerequisites

Approach

The <body> element is styled to have a minimum height of 100% of the viewport height, setting the background with vibrant colors, for glassmorphism effect.
The CSS begins with a universal reset, setting the box-sizing property to border-box. This ensures consistent spacing and sizing across different elements.
Using the `.circles` class, circular elements are created with varying sizes and positioned absolutely using percentages of the viewport width.
Each circle is styled with a background color and a box-shadow effect to achieve a glass-like appearance.
The header contains an image and navigation links. The navigation links are styled with rounded corners, box-shadow, and a backdrop-filter blur effect, giving them a frosted glass appearance.
Media queries are used to adjust the layout and styling for different screen sizes. Elements like navigation links and options cards are resized and repositioned to maintain a visually appealing layout across various devices.

Example: Implementation of designing Glassmorphism Website in HTML and CSS

HTML

<!DOCTYPE html>
<html lang="en">

<head>
    <meta name="viewport" 
          content="width=device-width, initial-scale=1.0">
    <title>Glassmorphism Website</title>
    <link rel="stylesheet" href="style.css">
</head>

<body>
    <div class="circles">
        <div class="circle-one"></div>
        <div class="circle-two"></div>
        <div class="circle-three"></div>
    </div>
    <header>
        <p>
            <img src=
"https://media.geeksforgeeks.org/wp-content/uploads/20240218121513/gfg3.jpg" 
                 alt="GFG icon">
            GeeksforGeeks
        </p>
        <nav>
            <li><a href="#">Courses</a></li>
            <li><a href="#">Trending</a></li>
            <li><a href="#">DSA</a></li>
            <li><a href="#">C++</a></li>
            <li><a href="#">Java</a></li>
            <li><a href="#">Python</a></li>
            <li><a href="#">Machine Learning</a></li>
            <li><a href="#">Artificial Learning</a></li>
        </nav>
    </header>
    <main>
        <section class="search">
            <h1>Hello, What Do You Want To Learn?</h1>
            <label for="search">
              <input type="search">
                  Search
              </label>
            <ol>
                <li>Full Stack: Frontend and Backend</li>
                <li>Applied Data Science</li>
                <li>DSA: Basic to Advanced</li>
            </ol>
        </section>
        <section class="options">
            <div class="read">
                <h3>Read</h3>
                <p>
                      Hi everyone! We are delighted to announce that
                      due to the high demand for GeeksforGeeks Classrooms.
                </p>
            </div>
            <div class="practice">
                <h3>Practice</h3>
                <p>
                      Solve DSA Problems. Filter based on topic tags and
                      company tags. Get curated problem lists by GFG.
                </p>
            </div>
            <div class="learn">
                <h3>Learn</h3>
                <p>
                      Most popular course on DSA trusted by over 75,000 
                      students! Built with years of experience by industry.
                  </p>
            </div>
        </section>
        <section class="banner">
            <h1>Challenge</h1>
            <div>
                <h3>
                  Final Days to Save Money... Because 
                  Three 90 Finale is Here!
                  </h3>
                <p>
                  As we transition into the new phase, it's essential
                  to fuel our inner drive for success. On popular
                  demand, GeeksforGeeks is happy to announce an 
                  extension of Three 90 Challenge.
                  </p>
            </div>

        </section>

        <div class="community">Explore Community</div>
    </main>

</body>

</html>

CSS

/* style.css*/

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    font-family: sans-serif;
    color: rgb(255, 255, 255);
    background-repeat: no-repeat;
    background-image: linear-gradient(-60deg, rgba(13, 182, 13, 0.557) 10%,
                                                rgba(3, 63, 13, 0.849));
}

.circles>* {
    width: 15vw;
    height: 15vw;
    position: absolute;
    z-index: -1;
    border-radius: 50%;
}

.circle-one {
    background-color: rgba(122, 133, 17, 0.801);
    box-shadow: inset 25px 25px 40px rgba(0, 0, 0, 0.24),
                  inset -25px -25px 40px rgba(255, 253, 253, 0.685);
    bottom: 10%;
    right: 20%;
}

.circle-two {
    background-color: rgb(243, 208, 10);
    box-shadow: inset 25px 25px 40px rgba(0, 0, 0, 0.24),
                  inset -25px -25px 40px rgba(255, 253, 253, 0.685);
    top: 20%;
    left: 50%;
}

.circle-three {
    background-color: rgba(214, 162, 198, 0.856);
    box-shadow: inset 25px 25px 40px rgba(0, 0, 0, 0.24), 
                  inset -25px -25px 40px rgba(255, 253, 253, 0.685);
    bottom: 20%;
    left: 20%;
}

header {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
}

header p {
    display: flex;
    align-items: center;
    margin-top: 1rem;
    padding: 2px;
    border-radius: 20px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    font-size: 15px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.384);
    backdrop-filter: blur(30px);
}

header p:hover {
    background-color: white;
    color: green;
    transition: all .5s ease;
}

header img {
    width: 50px;
    margin: 1rem;
    border-radius: 50%;
    border: 2px solid white;
}

nav {
    width: 100%;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    column-gap: 2vw;
    margin-top: 10px;
}

nav li {
    list-style: none;
    background-color: rgba(12, 241, 69, 0.068);
    box-shadow: 0 0 50px 0 rgba(0, 0, 0, 0.226);
    backdrop-filter: blur(30px);
    border-radius: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.5);
    border-right: 1px solid rgba(255, 255, 255, 0.5);
    padding: 10px;
    cursor: pointer;
}

nav>li>a {
    text-decoration: none;
}

@keyframes list-bg {
    from {
        background-color: rgba(183, 217, 196, 0.272);
    }

    to {
        background-color: rgba(23, 85, 13, 0.444);
    }
}

nav li:hover {
    background-color: white;
    color: green;
    outline: 2px solid white;
    outline-offset: 5px;
    animation: none;
    transition: all .3s ease;
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    border-radius: 10px;
}

.community {
    font-size: 1.3rem;
    position: fixed;
    bottom: 10px;
    right: 10px;
    background-color: rgba(61, 235, 76, 0.815);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    border-radius: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.5);
    border-right: 1px solid rgba(255, 255, 255, 0.5);
    padding: .5rem 1rem;
    cursor: pointer;
}

.community:hover {
    background-color: rgb(255, 255, 255);
    outline: 2px solid green;
    color: green;
    transition: background-color .5s ease, color .5s ease;
}

.search {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.search h1 {
    font-size: 1.3rem;
}

.search label {
    display: flex;
    align-items: center;
    column-gap: 10px;
    border-radius: 10px;
    outline: 2px solid green;
    background-color: green;
    backdrop-filter: blur(30px);
    margin-top: 10px;
    padding: 0 10px 0 0;
    cursor: pointer;
}

.search label:hover:not(:has(*:hover)) {
    background-color: rgba(4, 54, 4, 0.863);
    transition: all .5s ease;
}

.search input {
    width: 400px;
    padding: 13px;
    border-radius: 10px;
    border: none;
}

.search input:focus {
    outline: none;
    background-color: lightgreen;
}

.search input:hover {
    background-color: lightgreen;
    transition: .3s ease;
}

.search ol {
    display: flex;
    column-gap: 10px;
    margin-top: 10px;
    font-size: .7rem;
}

.search li {
    list-style: none;
    padding: 10px;
    color: white;
    background-color: rgba(3, 124, 3, 0.253);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(30px);
    border-radius: 5px;
    border-top: 1px solid rgba(255, 255, 255, 0.5);
    border-right: 1px solid rgba(255, 255, 255, 0.5);
    cursor: pointer;
}

.search li:hover {
    outline: 1px solid white;
    background-color: rgb(4, 83, 4);
    transition: all .3s ease;
}

.options {
    padding: 30px;
    display: flex;
    justify-content: space-evenly;
    column-gap: 30px;
}

.options>* {
    height: 230px;
    max-width: 250px;
    display: flex;
    flex-direction: column;
    padding: 10px;
    box-shadow: 0px 10px 20px rgba(0, 0, 0, 0.096);
    border-radius: 10px;
    border-top: 2px solid rgba(255, 255, 255, 0.5);
    border-right: 2px solid rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(30px);
    cursor: pointer;
}

.options>* h3 {
    height: 50%;
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.options p {
    text-align: center;
    margin-top: 10px;
}

.options>*:hover {
    box-shadow: inset -10px -10px 20px rgba(255, 255, 255, 0.158);
}

.read h3 {
    background-color: salmon;
}

.practice h3 {
    background-color: lightgreen;
}

.learn h3 {
    background-color: skyblue;
}

.banner {
    max-width: 800px;
    height: 270px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-radius: 10px;
    border-top: 2px solid rgba(255, 255, 255, 0.5);
    border-right: 2px solid rgba(255, 255, 255, 0.5);
    background-image: linear-gradient(90deg, #17df4233 30%,
                        rgba(255, 255, 255, 0.055) 50%, 
                        rgba(0, 0, 0, 0.075) 50%);
    backdrop-filter: blur(30px);
    animation: banner-shadow 1s infinite alternate;
    overflow: hidden;
}

@keyframes banner-shadow {
    from {
        box-shadow: 0 0 5px white;
    }

    to {
        box-shadow: 0 0 15px white;
    }
}

.banner h1 {
    font-size: 3.5rem;
    transform: translateX(50px) rotateZ(-30deg);
}

.banner div {
    width: 50%;
    font-size: 1rem;
    flex-direction: column;
    justify-content: center;
    padding: 20px;
}

.banner div p {
    margin-top: 10px;
}

@media (max-width: 800px) {
    nav {
        row-gap: 10px;
        flex-wrap: wrap;
    }

    .options {
        flex-wrap: wrap;
        row-gap: 10px;
    }

    .options>* {
        width: 50vw;
    }

    .search input {
        width: 50vw;
    }

    .banner {
        width: 85vw;
        height: 250px;
        flex-direction: column;
        justify-content: start;
        background-image: linear-gradient(0deg, #17df4233 75%,
                            rgba(255, 255, 255, 0.055) 50%, 
                            rgba(0, 0, 0, 0.075) 50%);
    }

    .banner h1 {
        align-self: center;
        transform: none;
    }

    .banner div {
        width: 100%;
    }
}

@media (max-width: 600px) {
    :root {
        font-size: 12px;
    }

    .options>* {
        width: 60vw;
        height: 200px;
    }

    .banner {
        height: 200px;
    }
}

Output:

Output

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