*{
margin:0;
padding:0;
box-sizing:border-box;
}

body{
font-family:Arial,sans-serif;
background:#ffffff;
color:#111827;
line-height:1.7;
}

header{
background:#71827e;
color:white;
padding:60px 20px;
text-align:center;
}

main{
max-width:1100px;
margin:auto;
padding:40px 20px;
}

section{
margin-bottom:60px;
}

h1,h2,h3{
margin-bottom:15px;
}

footer{
background:#111827;
color:white;
padding:40px;
text-align:center;
}