h1 {
    color: red;
}

#message-div {
    margin-top: 3vh;
}

header {
    display: flex;
    align-items: center;
    height: 10vh;
}

a {
    color: red;
}

#div1 {
    max-width: 600px;
    margin: auto;
}

.div2 {
    max-width: 600px; 
    margin: auto;
}