create.css

* {
    margin: 0;
    padding: 0;
}

.invoiseHeader ::after {
    width: 90%;
}

.invoiceInput {
    display: flex;
    flex-wrap: wrap;
    margin: 25px;
    border: 2px solid #e4e6e9;
    padding: 20px;
}

.createInvoice {
    margin: 20px;
    border: 2px solid #e4e6e9;
}

.input {
    width: 99%;
    height: 50px;
    border: 2px solid #e4e6e9;
    border-radius: 5px;
}

.inputNumber,
.inputInvoiceDate,
.inputSupplyDate {
    width: 50%;
}

.inputComment {
    width: 100%;
}

.comment {
    width: 100%;
}

.button {
    float: right;
}

.caption {
    margin: 10px 0;
}
.button{
    margin:30px 0;
}

@media screen and (max-width: 800px) {
    .input {
        width: 98%;
    }    
}
@media screen and (max-width: 600px) {
    .input {
        width: 97%;
    }    
}