html{
    font-size: 16px;
}

body {
    font-family: sans-serif;
    margin: 0; 
    min-height: 100vh; 
    background-color: #f0f2f5;
    color: #333;

    display: flex;
    flex-direction: column; 
}

header {
    font-size: 16px;
}