body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}
.header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #004080;
    color: white;
    padding: 10px 30px;
    flex-wrap: nowrap;
}
.logo-left img {
    height: 100px;
}
.center-text {
    text-align: center;
    flex: 1;
}
nav {
    background: #eee;
    padding: 0.5em;
    text-align: center;
}
nav a {
    margin: 0 1em;
    text-decoration: none;
    color: #004080;
}
footer {
    text-align: center;
    padding: 1em;
    background: #004080;
    color: white;
}