tax_group.css

.oe_tax_group_editable {
    width: 100%;
}

.tax_group_edit {
    white-space: nowrap;
}

.tax_group_edit:hover {
    color: #00A09D;
    cursor: pointer;
}

.oe_tax_group_name {
    font-weight: bold; 
    min-width: 150px;
    text-align: right;
    padding-right: 20px;
}

.oe_tax_group_editable .oe_tax_group_amount_value input {
    width: 65%; 
    float: right; 
    text-align: right;
}