* {
    margin-left: auto;
    margin-right: auto;
}

.navItem {
    color: white;
}

ul {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-left: 15%;
    margin-right: 15%;
}

h1 {
    font-size: 40px;
}

h2 {
    font-size:30px;
}

h3 {
    font-size: 25px;
}

section {
    margin-left: 15%;
    margin-right: 15%;
}