Merci pour ces explications. Je me coucherai moins bête ce soir.

Un footer toujours en bas de page, version Timo. Merci

Des exemples de templates avec les explications sur les choix pris.

Bien vu.

Bookmarklet to refresh all stylesheets on the current page.
Un peu comme Crtl+R mais sans recharger la page en totalité.

Pas mal. Via Yome.

Jolie police.

<div class="containter p-3 p-md-5">
  <div class="mb-5">
    <h1 class="h4">
      Stuff you can do with <code>pointer-events</code>
    </h1>
    <p>
      <code>pointer-events</code> is mostly used to bypass click events on an element. But did you know you can reset the pointer events of descendant elements? This allows us to do some interesting things…
    </p>
    <p class="small text-muted">
      (Bootstrap is included in this pen for basic styling)
    </p>
  </div>

  <div class="my-5">
    <h2 class="h5">
      1. Change styling of a parent on hover
    </h2>
    <p>
      The hover styling of the card is not set unless the button is hovered. Keep in mind this technique disables the ability to open the image-specific context menu when the image is right-clicked (Thanks Šime Vidas for  <a href="<a href="https://twitter.com/simevidas/status/1020867060614811649&quot">https://twitter.com/simevidas/status/1020867060614811649&quot</a>; target="_blank">pointing that out</a>).
    </p>

    <div class="card change-parent-style">
      <img class="card-img-top" height="180" width="286" alt="100%x180" src="data:image/svg+xml;charset=UTF-8,%3Csvg%20width%3D%22286%22%20height%3D%22180%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20286%20180%22%20preserveAspectRatio%3D%22none%22%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%23holder_164b14928b4%20text%20%7B%20fill%3Argba(255%2C255%2C255%2C.75)%3Bfont-weight%3Anormal%3Bfont-family%3AHelvetica%2C%20monospace%3Bfont-size%3A14pt%20%7D%20%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cg%20id%3D%22holder_164b14928b4%22%3E%3Crect%20width%3D%22286%22%20height%3D%22180%22%20fill%3D%22%23777%22%3E%3C%2Frect%3E%3Cg%3E%3Ctext%20x%3D%22107.203125%22%20y%3D%2296.3%22%3E286x180%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E">
      <div class="card-body">
        <h5 class="h6 card-title">Card title</h5>
        <p class="card-text">Hover the button below to see the effect in action.</p>
        <button class="btn btn-primary js-btn">
          Hover me
        </button>
      </div>
    </div>
  </div>

  <div class="my-5">
    <h2 class="h5">
      2. Change styling of another element
    </h2>
    <p>
      Style the text of the sibling card when the button is hovered.
    </p>

    <div class="d-flex flex-wrap change-element-style">

      <div class="card mb-3 mr-3">
        <img class="card-img-top" height="180" width="286" alt="100%x180" src="data:image/svg+xml;charset=UTF-8,%3Csvg%20width%3D%22286%22%20height%3D%22180%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20286%20180%22%20preserveAspectRatio%3D%22none%22%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%23holder_164b14928b4%20text%20%7B%20fill%3Argba(255%2C255%2C255%2C.75)%3Bfont-weight%3Anormal%3Bfont-family%3AHelvetica%2C%20monospace%3Bfont-size%3A14pt%20%7D%20%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cg%20id%3D%22holder_164b14928b4%22%3E%3Crect%20width%3D%22286%22%20height%3D%22180%22%20fill%3D%22%23777%22%3E%3C%2Frect%3E%3Cg%3E%3Ctext%20x%3D%22107.203125%22%20y%3D%2296.3%22%3E286x180%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E">
        <div class="card-body">
          <h5 class="h6 card-title">Card 1</h5>
          <button class="btn btn-primary js-btn">
            Hover me
          </button>
        </div>
      </div>

      <div class="card mb-3 mr-3">
        <img class="card-img-top" height="180" width="286" alt="100%x180" src="data:image/svg+xml;charset=UTF-8,%3Csvg%20width%3D%22286%22%20height%3D%22180%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20286%20180%22%20preserveAspectRatio%3D%22none%22%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%23holder_164b14928b4%20text%20%7B%20fill%3Argba(255%2C255%2C255%2C.75)%3Bfont-weight%3Anormal%3Bfont-family%3AHelvetica%2C%20monospace%3Bfont-size%3A14pt%20%7D%20%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cg%20id%3D%22holder_164b14928b4%22%3E%3Crect%20width%3D%22286%22%20height%3D%22180%22%20fill%3D%22%23777%22%3E%3C%2Frect%3E%3Cg%3E%3Ctext%20x%3D%22107.203125%22%20y%3D%2296.3%22%3E286x180%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E">
        <div class="card-body">
          <h5 class="h6 card-title">Card 2</h5>
          <p class="card-text element">This text changes color if the button in card 1 is hovered.</p>
        </div>
      </div>

    </div>
  </div>

  <div class="my-5">
    <h2 class="h5">
      3. Only make the pseudo element clickable
    </h2>
    <p>
      Only the <b class="text-danger">&cross;</b> is clickable. <span class="text-muted small">(Doesn't work in Firefox, see <a href="<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1177528&quot">https://bugzilla.mozilla.org/show_bug.cgi?id=1177528&quot</a>; target="_blank">this bug</a>.)</span>
    </p>
    <button class="btn-x js-btn">
      Filter
    </button>
  </div>

  <div class="my-5">
    <h2 class="h5">
      4. Only make the path clickable.
    </h2>
    <p>
      <code>pointer-events: visiblePainted</code> can be used to only make the path interactive.
    </p>
    <svg aria-hidden="true" width="384" height="512" role="img" xmlns="<a href="http://www.w3.org/2000/svg&quot">http://www.w3.org/2000/svg&quot</a>; viewBox="0 0 384 512" class="img-fluid"><path fill="currentColor" d="M0 32l34.9 395.8L191.5 480l157.6-52.2L384 32H0zm308.2 127.9H124.4l4.1 49.4h175.6l-13.6 148.4-97.9 27v.3h-1.1l-98.7-27.3-6-75.8h47.7L138 320l53.5 14.5 53.7-14.5 6-62.2H84.3L71.5 112.2h241.1l-4.4 47.7z" class="svg"></path></svg>
    <p class="small">
      Icon from <a href="<a href="https://fontawesome.com/icons/html5?style=brands&quot">https://fontawesome.com/icons/html5?style=brands&quot</a>; target="_blank" rel="noopener">Font Awesome</a>
    </p>
  </div>

  <div class="mt-5">
    <h2 class="h5">
      That's all folks!
    </h2>
    <p>
      xoxo <a href="<a href="https://twitter.com/Martijn_Cuppens">@Martijn_Cuppens</a&gt">https://twitter.com/Martijn_Cuppens">@Martijn_Cuppens</a&gt</a>;
    </p>
    <p class="small mt-4">
      PS. make sure to check out <a href="<a href="https://github.com/project-rfs/rfs">RFS</a&gt">https://github.com/project-rfs/rfs">RFS</a&gt</a>; to control your responsive font sizes.
    </p>
  </div>
</div>

// Global styling
.card {
  max-width: 286px;
}

.btn {
  // All btns are clickable/hoverable
  pointer-events: auto;
}
// End Global styling

// Example 1:
.change-parent-style {
  pointer-events: none;
  transition: border-color 0.15s ease-in-out;

  &:hover {
    border-color: #0069d9;
  }
}
// End Example 1

// Example 2:
.change-element-style {
  pointer-events: none;

  &:hover{
    .element {
      color: #28a745;
    }
  }
}
// End Example 2

// Example 3:
.btn-x {
  pointer-events: none;
  font-weight: 700;
  border: none;
  background-color: #e8e8e8;
  border-radius: .2rem;
  padding: .5em .8em;
  cursor: pointer;

  &::after {
    content: '×';
    color: #dc3545;
    pointer-events: auto;
  }

  &:focus {
    box-shadow: rgba(0, 123, 255, 0.25) 0px 0px 0px 0.2rem;
    outline: 0;
  }
}
// End Example 3

// Example 4:
.svg {
  pointer-events: visiblePainted;
  transition: fill .15s ease-in-out;

  &:hover {
    fill: #fd7e14;
  }
}
// End Example 4

Astucieux.
Merci.