body{
font-family:Segoe UI;
margin:0;
padding:0;
}

.navbar{
background:#198754;
padding:10px;
}

.navbar a{
color:white;
text-decoration:none;
margin-right:15px;
font-weight:600;
}

.container{
width:85%;
margin:auto;
padding:30px 0;
}

.card{
border:1px solid #ddd;
padding:15px;
border-radius:10px;
margin-bottom:15px;
}

.btn{
background:#198754;
color:white;
padding:10px 15px;
border:none;
cursor:pointer;
text-decoration:none;
display:inline-block;
}