/*
@media (min-width: 600px) {
    #all { max-width: 800px; }
} 
    */
body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    color: #333;

    display: flex;
    flex-flow: column wrap;
    width: 100%;
    align-items: center;
    justify-content: center;
    margin: 0px;
}

#all {
    display: flex;
    max-width: 800px;
    flex-flow: column wrap;
    align-items: center;
    justify-content: center;
    background-color: white;
    margin: 0px;
}

header {
    display: flex;
    width: 100%;
    align-items: center;
    flex-flow: column wrap;
    background-color: #4CAF50;
    color: white;
}
header h1 {
    margin: 0;
    font-size: 2.5em;
}
main {
    display: flex;
    align-items: center;
    flex-flow: column wrap;
    padding: 20px;
}
main h2 {
    font-size: 2em;
    margin-bottom: 20px;
}

main h3 {
    font-size: 1.25em;
    /* margin-bottom: 20px; */
    display: flex;
    width: 100%;
    align-content: start;
}

main p {
    font-size: 1.2em;
    line-height: 1.6;
}
.cta {
    margin-top: 30px;
}
.cta a {
    display: inline-block;
    padding: 10px 20px;
    background-color: #4CAF50;
    color: white;
    text-decoration: none;
    font-size: 1.2em;
    border-radius: 5px;
    transition: background-color 0.3s;
}
.cta a:hover {
    background-color: #45a049;
}
footer {
    display: flex;
    flex-flow: column wrap;
    width: 100%;
    align-items: center;
    background-color: #333;
    color: white;
    padding: 10px 0;
    margin-top: 30px;
}
footer p {
    margin: 0;
}