.flex-conteiner {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    flex-direction: column;
}
.flex-conteiner > .flex-container-fields {
    display: flex;
    flex-direction: column;
}

.flex-container-fields > flex-label-input {}

.flex-input {
    border: 2px solid #e7e7e7;
    border-radius: 4px;
    padding: 0 8px;
    margin: 10px 0px;
    font-size: 1rem;
    box-sizing: border-box;
    width: 100%;
    min-width: 250px;
    max-width: 400px;
    min-height: 32px;
}
.flex-conteiner > .flex-container-buttons {
    display: flex;
    justify-content: center;
    grid-gap: 50px;
}

.flex-container-buttons > button {
    width: 100%;
    min-width: 100px;
    max-width: 100px;
}