body{
font-family: Arial, Helvetica, sans-serif;
margin:0;
background:#f4f6f8;
}
header{
background:#2f6a52;
color:white;
padding:25px;
text-align:center;
}
nav{
background:#333;
display:flex;
flex-wrap:wrap;
justify-content:center;
}
nav a{
color:white;
text-decoration:none;
padding:14px 20px;
display:block;
}
nav a:hover{
background:#555;
}
.container{
max-width:1000px;
margin:auto;
padding:20px;
background:white;
}
.card{
background:#f9f9f9;
padding:15px;
margin-bottom:15px;
border-radius:6px;
box-shadow:0 1px 4px rgba(0,0,0,.1);
}
footer{
background:#2f6a52;
color:white;
text-align:center;
padding:15px;
margin-top:20px;
}
ul{line-height:1.8}
@media(max-width:700px){
nav{flex-direction:column;}
}