navbar.css

@import url('https://fonts.googleapis.com/css?family=Poppins:400,500,600,700&display=swap');

header{
    box-sizing: border-box; 
}

header{
    font-family: "Poppins", sans-serif;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: 0.6s;
    padding: 40px 10px;
    z-index: 1000000;
}

header.scroll {
    font-family: "Poppins", sans-serif;
    padding: 5px 20px;
    background: #ffffff;
}

header.scroll .logo,
header.scroll ul li a {
    color: #000;
}


header .logo{
    position: relative;
    font-weight: 700;
    color: #333;
    text-decoration: none;
    font-size: 2em;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: 0.6s;
}

header ul{
    font-family: "Poppins", sans-serif;
    position: relative ;
    display: flex;
    justify-content: center ;
    align-items: center;
}

header ul li {
    font-family: "Poppins", sans-serif;
    position: relative;
    list-style: none;
}

header ul li a {
    font-family: "Poppins", sans-serif;
    position: relative;
    margin: 0 30px;
    text-decoration:none ;
    color: #000;
    letter-spacing: 2px;
    font-weight: 1000px;
    transition: 0.6s;
    font-size: large;
}

.navbar a::before{
    font-family: "Poppins", sans-serif;
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #000;
    transition: .3s;
}

.navbar a:hover::before{
    width: 100%;
}

.cursor header{
    position: fixed;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #fff;
    transition: 0.1s;
    transform: translate(-50%,-50%);
    pointer-events: none;
    mix-blend-mode: difference;
    z-index: 99999999;
}