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

    .button{
        margin-top: 5px;
        width: 200px;
    }
    
}

@media screen and (min-width:1000px) {
    .description{
        width: 50%;
    }
    
}