body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    width: 100%;
}
.hero {
    background: url('gym-background.jpg') no-repeat center center/cover;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    text-align: center;
    position: relative;
    padding: 20px;
}
.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}
.hero-content {
    position: relative;
    z-index: 2;
}
.hero-content h1 {
    font-size: 3rem;
    margin: 0;
    text-transform: uppercase;
}
.cta-button {
    display: inline-block;
    margin-top: 15px;
    padding: 10px 20px;
    background: #ff5733;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
}
.about, .services, .contact {
    padding: 50px;
    text-align: center;
    background: #f4f4f4;
    margin: 20px 0;
}
.services ul {
    list-style: none;
    padding: 0;
}
.services li {
    margin: 10px 0;
    font-size: 1.2rem;
}
footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 10px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    .cta-button {
        padding: 8px 16px;
        font-size: 0.9rem;
    }
    .about, .services, .contact {
        padding: 30px;
    }
    .services li {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .hero {
        height: 80vh;
        padding: 10px;
    }
    .hero-content h1 {
        font-size: 1.8rem;
    }
    .cta-button {
        padding: 6px 12px;
        font-size: 0.8rem;
    }
    .about, .services, .contact {
        padding: 20px;
    }
    .services li {
        font-size: 0.9rem;
    }
}