style.css

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

body {
    overflow: hidden;
}

section {
    position: absolute;
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(to bottom, #873394, #1EA49F );
}

section::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 50%;
    bottom: 0;
    z-index: 10;
    border-top: 1px solid rgba(255, 255, 255, 0.5);
    background-color: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

section .color {
    position: absolute;
    filter: blur(150px);
}

section .color:nth-child(1) {
    top: -350px;
    background: #873394;
    width: 600px;
    height: 600px;
}

section .color:nth-child(2) {
    bottom: -150px;
    left: 100px;
    background: #fffd87;
    width: 500px;
    height: 500px;
}

section .color:nth-child(3) {
    bottom: -50px;
    right: 0px;
    background: #00d2ff;
    width: 300px;
    height: 300px;
}

ul {
    position: relative;
    display: flex;
}

ul li {
    position: relative;
    list-style: none;
    margin: 10px;
}

ul li a {
    position: relative;
    top: 0;
    width: 80px;
    height: 80px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    font-size: 2em;
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-right: 1px solid rgba(255, 255, 255, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(4px);
    z-index: 1;
    box-shadow: 0 5px 45px rgba(255, 255, 255, 0.1);
    text-decoration: none;
    overflow: hidden;
    transition: top 0.5s, z-index 0s, transform 0.5s;
    transition-delay: 0.5s, 0.5s, 0s;
}

ul li a:hover {
    transition-delay: 0.s, 0.5s, 0.5s;
    top: -50px;
    transform: translateY(-50px);
    z-index: 11;
}

ul li a:before {
    content: '';
    position: absolute;
    top: 0;
    width: 50px;
    height: 100%;
    background: rgba(255, 255, 255, 0.5);
    transform: skewX(45deg) translateX(150px);
    transition: 0.5s;
}

ul li a:hover:before {
    transform: skewX(45deg) translateX(-150px);
}