@media screen and (max-width:700px){
    header .container{
        display: flex;
        flex-direction: column;
        }

        .botao{
            margin-top: 5px;
            width: 200px;
            height: 30px;
        }
}

@media screen and (min-width:100px){
    .descricao{
        width: 70%;
    }
}