body {
    margin: 0 auto;
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    background-color: #f5f5f5;
}

#header {
    display: flex;
    margin: 0 auto;
    flex-direction: column;
    align-items: stretch;             
    gap: 1rem;
    margin-bottom: 2rem; 
    max-width: 700px;             
    width: 100%;
    padding: 1.5rem;
}

.nav {
    display: flex;
    gap: 2rem;
}

#signinout {
    display: flex;
    gap: 1rem;
}

section {
    margin-bottom: 2.5rem;         
}

.cards-area {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;  
    flex-wrap: wrap;                     
}

.card {
    background: white;              
    border: 2px solid #ddd;          
    border-radius: 6px;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: .5rem;
}

@media (max-width: 600px) {

    .main-wrapper {
        padding: 1rem;
        max-width: 100%;
    }

    .nav {
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
    }

    #header {
        gap: .75rem;
    }

    .cards-area {
        flex-direction: column;
        align-items: stretch;
    }

    .card {
        max-width: 100%;
    }
}

h1 {
    font-size: 2rem;
}

h2 {
    font-size: 1.5rem;
}

p {
    font-size: 1rem;
    line-height: 1.5;
}

a {
    color: #2a7ae2;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
}