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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background: #2c3e50;
    color: white;
    padding: 1rem 2rem;
    border-radius: 10px;
    margin-bottom: 30px;
}

.center-text {
  text-align: center;
}

h1 {
    margin-bottom: 1rem;
}

nav a {
    color: white;
    text-decoration: none;
    margin-right: 20px;
    padding: 5px 10px;
}

nav a:hover {
    background: rgba(255,255,255,0.1);
    border-radius: 3px;
}

main {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.tech-stack {
    background: #e8f4f8;
    padding: 1rem;
    border-radius: 5px;
    margin-top: 1rem;
}

.tech-stack ul {
    margin-left: 2rem;
}

footer {
    text-align: center;
    color: #7f8c8d;
    padding: 1rem;
}