body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: #f1f1f1;
}

.container {
    width: 360px;           /* Largura padrão de celular */
    padding: 10px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0,0,0,0.2);
    text-align: center;
}

.container img {
    width: 100%;            /* Ocupa toda a largura */
    height: auto;           /* Mantém proporção */
    border-radius: 10px;
}