.header{
    position: fixed;
    z-index: 100;
    width: calc(100% - 40px);
    height: 10vh;
    background-color: var(--black);
    display: flex;
    justify-content: space-between; 
    align-items: center; 
    padding: 0 20px;
    top: 0;
}

.header-link {
    font-size: 24px;
    color: var(--white);
    font-family: var(--font-2);
    border-bottom: 2px solid var(--black);
    transition: color 0.3s ease, border-bottom-color 0.3s ease; /* Add transition for smooth effect */
}

.header-link:hover {
    color: red; /* Change text color to red on hover */
    border-bottom-color: red; /* Change border color to red on hover */
}

.header-link-group {
    display: flex;
    gap: 50px; 
}

a {
    text-decoration: none;
}