.first {
    width: 80%;
    margin: 0 auto;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    z-index: 10;
    position: relative;
}

.first h1 {
    font-size: 5rem;
    color: var(--main-text);
}

.first p {
    font-size: 1rem;
    color: var(--second-text);
}

nav {
    top: 10px;
}