body, html {
margin: 0;
padding: 0;
font-family: Arial, sans-serif;
}
.container {
width: 100%;
max-width: 1200px;
margin: 0 auto;
padding: 20px;
box-sizing: border-box;
}
header, footer {
background-color: #f1f1f1;
padding: 10px 20px;
text-align: center;
}
main {
padding: 20px;
text-align: left;
}
img {
max-width: 100%;
height: auto;
}