section.podbor h1{
    margin: 1em 0;
}
section.podbor {
}

section.podbor .calc-title {
    font-weight: bold;
}

section.podbor form.sizes {
    display: inline-block;
    margin: 1em 0;
}

section.podbor form.sizes .field {
    margin: 0;
}

section.podbor input[type="text"] {
    text-align: center;
    max-width: 150px;
    box-sizing: border-box;
    width: 100%;
}