.container-main{
    width: 100%; 
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;  
    height: 500px; 
    background: linear-gradient( rgba(236, 100, 9, 0.7), rgba(0, 0, 0, 0.3)), url("../images/img-fundo.png");
    background-position: center;
    background-size: cover;
}

.container-main .img{
    text-align: center;
    padding: 10px;
    border-radius: 5px;
}

@media screen and (max-width: 688px){
    .container-main .img{
        padding: 10px;
    }
    .container-main h1, h2{
        font-size: 18px;
    }
    .container-main h1, h2{
        font-size: 30px;
        text-align: center;
    }
    .container-main .img h1, h2{
        font-size: 20px;
        
    }
}

@media screen and (max-width: 500px){
    .container-main .img{
        padding: 10px;
    }
}