body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: #ffd000; 
    color: #333;
    background: linear-gradient(to bottom, #463900, #ffd000, #463900);
}

header {
    background-color: #000000;
    color: white;
    width: 100%;
    padding: 20px 0;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
}

header p {
    margin: 10px 0 0;
    font-size: 1.2rem;
}

main {
    width: 80%;
    max-width: 1200px;
    margin: 20px 0;
}

.intro, .features {
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
    text-align: center;
}

.intro h2, .features h2 {
    text-align: center;
    font-size: 2rem;
}

.intro p, .features p {
    text-align: center;
    font-size: 1.1rem;
}

.btn-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    margin-top: 20px;
    background-color: #ff0000;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #c13b23;
}

.features {
    display: flex;
    justify-content: space-around;
}

.feature {
    flex: 1;
    margin: 10px;
    text-align: center;
}

.feature h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

footer {
    background-color: #000000;
    color: white;
    width: 100%;
    text-align: center;
    padding: 10px 0;
    position: bottom;
    bottom: 0;
}

video {
    position: relative;
    text-align: center;
}

/* Celulares */
@media (max-width: 767px) {
    header h1 {
        font-size: 1.8rem;
    }

    header p {
        font-size: 0.9rem;
    }

    main {
        width: 95%;
    }

    .intro, .features {
        padding: 15px;
    }

    .features {
        flex-direction: column;
    }

    .feature {
        margin: 5px 0;
    }

    .intro h2, .features h2 {
        font-size: 1.5rem;
    }

    .intro p, .features p {
        font-size: 0.9rem;
    }

    .btn {
        padding: 8px 15px;
        margin-top: 10px;
        width: 100%;
    }
}


/* Tablets */
@media (min-width: 768px) and (max-width: 1024px) {
    header h1 {
        font-size: 2rem;
    }

    header p {
        font-size: 1rem;
    }

    main {
        width: 90%;
    }

    .features {
        flex-direction: column;
    }

    .feature {
        margin: 10px 0;
    }

    .intro h2, .features h2 {
        font-size: 1.8rem;
    }

    .intro p, .features p {
        font-size: 1rem;
    }

    .btn {
        padding: 10px;
        margin-top: 15px;
        width: 80%;
    }
}

/* Notebooks e Desktops */
@media (min-width: 1025px) {
    main {
        width: 85%;
    }

    .feature {
        margin: 5px;
    }

    .btn {
        padding: 8px 18px;
    }
}