body{
font-family: Arial;
margin:0;
background:#f4f4f4;
}

header{
background:#003366;
color:white;
padding:20px;
text-align:center;
}

nav a{
color:white;
margin:10px;
text-decoration:none;
font-weight:bold;
}

main{
padding:30px;
}

.artigos{
display:flex;
gap:20px;
}

article{
background:white;
padding:15px;
border-radius:5px;
width:30%;
box-shadow:0 0 5px rgba(0,0,0,0.2);
}

article img{
width:100%;
border-radius:5px;
}

footer{
text-align:center;
padding:20px;
background:#222;
color:white;
margin-top:30px;
}

form{
display:flex;
flex-direction:column;
width:300px;
}

input, textarea{
margin-bottom:10px;
padding:8px;
}

button{
padding:10px;
background:#003366;
color:white;
border:none;
}