#title {
    color: green;
}

form {
    display: flex;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 8px;
    min-width: 180px;
    max-width: 800px;
    border: dashed lightblue;
}
.name {
    flex-grow: 1;
    flex-basis: 120px;
}
.email {
    flex-grow: 3;
    flex-basis: 170px;
}
button {
    flex-grow: 1;
    flex-basis: 70px;
}