.landing-page {
    background-size: cover;
    background: white no-repeat fixed center;
    min-height: 100vh;
    margin: 0;
}


ul {
    list-style-type: none;
}

.header_menu {
    display: flex;
    justify-content: space-between;
}

.header_row {
    display: flex;
    justify-content: space-evenly;
    width: 100%;
}