monochromer

<link rel="stylesheet" href="build/css/<some-css-filename.css>">

<link rel="stylesheet" href="css/<some-css-filename.css>">

.box {
  flex: 0 0 auto;
}

  .box:nth-child(2) {
    flex: 1 1 0%;
  }

  .box + .box {
    margin-left: 1rem;
  }

<div data-number="1"></div>
<div data-number="2"></div>
<div data-number="3"></div>

[data-number]::before {
  content: attr(data-number);
}

  [data-number="1"] { color: red; }
  [data-number="2"] { color: blue; }
  [data-number="3"] { color: green; }

<colgroup>
  <col style="width: 40px" />
  <col style="width: 20%" />
  <col />
  <col style="width: 120px" />
</colgroup>

.logotype img {
    max-width: 100%;
}