body {
    color: #3A4454;
    margin: 0;
    font: 1em 'Roboto', sans-serif;
}

header {
    color: white;
    background-color: #3A4454;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

h1 {
    font-size: 4em;
}

.h1-hero {
    font-size: 7em;
}

h2 {
    font-size: 3em;
}

nav {
    padding: 1.5vh;
    color: white;
}

a {
    color: black;
}

section.hero {
    display: flex;
    height: 100vh;
}

div.split{
    display: flex;
    text-align: center;
    justify-content: center;
    align-items: center;
    flex: 1;
}

ul.nav-ul {
    list-style-type: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 0;
    padding: 10px;
}

ul.nav-ul li a {
    margin-left: 10px;
    color: white;
}

.screen {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    height: 100vh;
}

section.overview {
    text-align: left;
    padding: 20px;
    margin: 50px 0;
    margin-left: 2rem;
    margin-bottom: -2rem;
    margin-top: 5rem;
    box-sizing: border-box;
}

section.overview h2 {
    margin-bottom: 15px;
    color: #333;
}

section.overview p {
    font-size: 1rem;
    color: #555;
    line-height: 1.6;
    margin-right: 3rem;
}