styles.css

body {
    margin: 0;
    padding: 0;
    width: 100vw;
    height: 100vh;
    box-sizing: border-box;
    font-size: 10px;
    background: url("/background.jpg") no-repeat center;
    background-size: 100% 100%;
}

section {
    float: right;
    text-align: right;
    padding: 5% 1.5rem;
    margin-right: 3rem;
}

h1 {
    font-size: 6rem;
    font-family: 'Red Hat Display', sans-serif;
    margin: 3rem 0;
    text-shadow: 7px 7px 5px rgba(0, 0, 0, 0.3);
}

h3{
    font-size: 1.8rem;
    font-weight: 400;
    letter-spacing: 0.1rem;
    color: #5a5a5a;
    font-family: 'Poppins', sans-serif;
    margin: 3rem 0;
}

.btn-signup {
    width: 100%;
    height: 3.8rem;
    margin-top: 2rem;
}
.btn-signup a{
    font-size: 28px;
    font-weight: 400;
    letter-spacing: 0.05em;
    line-height: 2.2;
    width: 12rem;
    height: 100%;
    margin-right: 25%;
    font-family: 'Poppins', sans-serif;
    display: inline-block;
    text-align: center;
    border-radius: 50px;
    color: #000000;
    background: #CFAEDB;
    text-decoration: none;
    box-shadow: inset 8px 8px 0.2em rgba(0, 0, 0, 0.25);
}
nav {
    width: 100vw;
    height: 3rem;
    margin: 0 0;
}

nav ul {
    width: 40%;
    list-style: none;
    display: flex;
    float: right;
    padding-left: 20px;
    height: 100%;
    margin: 0 0;
    background: rgb(0, 0, 0);
    border-radius: 0 0 0 300px;
    box-shadow: 
        inset 13vw 0px #515050,
        inset 28vw 0px #292828;
}

.nav-links {
    color: #ffffff;
    margin: auto;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 1rem;
} 

@media (max-width: 500px) {
    body {
        background-position: top;
        background-size: 100% 70%;
    }
    section {
        text-align: center;
        margin-right: 0;
    }
    h1 {
       font-size: 58px; 
    }

    h3 {
        font-size: 24px;
    }
    nav ul {
        width: 60%;
        box-shadow: 
            inset 21vw 0px #515050,
            inset 43vw 0px #292828;
    }
    .btn-signup a{
        margin-right: 0;
        font-size: 24px;
        width: 8rem;
        height: 3rem;
    }
}