*{
margin:0;
padding:0;
box-sizing:border-box;
font-family:Arial, Helvetica, sans-serif;
}

body{
background:#f5f5f5;
color:#222;
}

.container{
width:90%;
max-width:1100px;
margin:auto;
padding:40px 0;
}

header{
background:#0d2d62;
color:white;
padding:20px 0;
}

header h1{
text-align:center;
}

nav{
text-align:center;
margin-top:15px;
}

nav a{
color:white;
text-decoration:none;
margin:0 15px;
font-weight:bold;
}

.hero{
background:#123b84;
color:white;
text-align:center;
padding:80px 20px;
}

.hero h2{
font-size:40px;
margin-bottom:20px;
}

.hero p{
font-size:18px;
margin-bottom:30px;
}

.btn{
background:#f5b400;
color:black;
text-decoration:none;
padding:12px 30px;
border-radius:5px;
font-weight:bold;
}

h2{
text-align:center;
margin-bottom:30px;
}

.card,
.course{
background:white;
margin-bottom:20px;
padding:25px;
border-radius:8px;
box-shadow:0 2px 8px rgba(0,0,0,.1);
}

.course ul{
margin:20px;
}

button{
background:#0d2d62;
color:white;
border:none;
padding:12px 25px;
border-radius:5px;
cursor:pointer;
}

button:hover{
background:#15479c;
}

footer{
background:#0d2d62;
color:white;
text-align:center;
padding:25px;
margin-top:40px;
}