style.css

* {
    margin: 0;
    padding: 0;
}

header {
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url(back.jpg);
    height: 100vh;
    background-size: cover;
    background-position: center;
}

.main-nav {
    float: right;
    list-style: none;
    margin-top: 30px;
}

.main-nav li {
    display: inline-block;
}

.main-nav li a {
    color: white;
    text-decoration: none;
    padding: 5px 20px;
    font-family: "Roboto", "sans-serif";
    font-size: 15px;
}

.main-nav li.active a {
    border: 1px solid white;
    padding: 5px 19px;
}

.main-nav li a:hover {
    border: 1px solid white;
    padding: 5px 19px;
}

body {
    font-family: monospace;
}

.row {
    max-width: 1200px;
    margin: auto;
}

.logo img {
    width: 150px;
    height: 100px;
    float: left;
}

.hero {
    position: absolute;
    top: 300px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
}

h1 {
    color: white;
    text-transform: uppercase;
    font-size: 70px;
    text-align: center;
}

.button {
    width: 80%;
    margin: 20px auto;
}

.btn {
    border: 1px solid white;
    padding: 10px 30px;
    color: white;
    text-decoration: none;
    font-size: 13px;
    text-transform: uppercase;
    margin: 0 5px;
}

.btn-one {
    background-color: darkorange;
    font-family: "Roboto", "sans-serif";
}

.btn-two {
    font-family: "Roboto", "sans-serif";
}

.btn-two:hover {
    background-color: darkorange;
    transition: all 0.5s ease-in;
}