.calc_wrap{
    padding: 20px;
    background-color: #ccc;
}
.form-item{
    margin: 10px;
}
.weight_wrap{
    height: 30px;
    margin-bottom: 0px;
}
.weight{
    font-weight: bold;
    font-size: 14px;
}
.no-top-margin{
    margin-top: 0px;
}
.reset_wrap,
.calc_din,
.calc_material,
.calc_diameter,
.calc_diameter,
.calc_length,
.weight_wrap,
.weighti_wrap,
.number_wrap{
    display: none;
}