style.css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    color: #fff;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 10%;
    background: transparent;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
}

.logo {
    font-size: 32px;
    color: #fff;
    text-decoration: none;
    font-weight: 700;
    filter: drop-shadow(0 0 5px #09001d);
}

.navbar a {
    font-size: 18px;
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    margin-left: 35px;
}

.navbar a:hover, 
.navbar a.active {
    color: blue;
}

.main {
    min-height: 100vh;
    background: url("background.jpg") no-repeat;
    background-size: cover;
    background-position: center;
}

.home {
    height: 100vh;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.home-content {
    max-width: 600px;
    display: flex;
    align-items: center;
    flex-direction: column;
}

.home-content h1 {
    font-size: 85px;
    font-weight: 700;
    text-shadow: 0 0 10px rgba(0, 0, 0, .3);
}

.home-content p {
    font-size: 20px;
    text-align: center;
    text-shadow: 0 0 10px rgba(0, 0, 0, .3);
    margin-bottom: 30px;
}

.home-content .start-button {
    width: 190px;
    height: 55px;
    background: blue;
    border: 2px solid #fff;
    outline: none;
    border-radius: 6px;
    box-shadow: 0 0 10px blue;
    font-size: 18px;
    color: #fff;
    letter-spacing: 1px;
    font-weight: 600;
    cursor: pointer;
    transition: .5s;
}

.home-content .start-button:hover {
    background: #09001d;
    box-shadow: none;
}