body{
    display: flex;
    align-items: center;
}

.calculationForm {
    background: silver;
    margin: 0 auto;
    min-width: 30%;
    padding: 1em;
}

#calculationGrid {
    width: 300px;
    height: 300px;
    margin: 0.5em;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: 1fr 1fr 1fr;
    grid-auto-flow: column;
}

#calculationOutput {
    display: flex;
}

#inputBlock {
    display: flex;
}

#inputDate {
    margin-left: 0.5em;
}

#errorMsg {
    color: #af0000;
    margin-left: 1em;
}

.cCell {
    margin: 0;
    padding: 0;
}

.cCellText {
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

#cCell1 {
    border-right: 1px solid black;
    border-bottom: 1px solid black;
}

#cCell2 {
    border-top: 1px solid black;
    border-right: 1px solid black;
    border-bottom: 1px solid black;
}

#cCell3 {
    border-top: 1px solid black;
    border-right: 1px solid black;
}

#cCell4 {
    border-right: 1px solid black;
    border-bottom: 1px solid black;
    border-left: 1px solid black;
}

#cCell5 {
    border: 1px solid black;
}

#cCell6 {
    border-top: 1px solid black;
    border-right: 1px solid black;
    border-left: 1px solid black;
}

#cCell7 {
    border-bottom: 1px solid black;
    border-left: 1px solid black;
}

#cCell8 {
    border-top: 1px solid black;
    border-bottom: 1px solid black;
    border-left: 1px solid black;
}

#cCell9 {
    border-top: 1px solid black;
    border-left: 1px solid black;
}