25%-grids with Zen-Grids

SassMeister-input-HTML.html

<div>
  <div class="ym-g25-1">
    <div class="img-teaser">
      <img src="http://placehold.it/230x240" alt="">
      <a href="#" class="teaserlink">super-toller Link</a>
    </div>
    <!-- /.teaser -->
  </div>
  <div class="ym-g25-2">
    <div class="img-teaser">
      <img src="http://placehold.it/230x240" alt="">
      <a href="#" class="teaserlink">super-toller Link</a>
    </div>
    <!-- /.teaser -->
  </div>
  <div class="ym-g25-3">
    <div class="img-teaser">
      <img src="http://placehold.it/230x240" alt="">
      <a href="#" class="teaserlink">super-toller Link</a>
    </div>
    <!-- /.teaser -->
  </div>
  <div class="ym-g25-4">
    <div class="img-teaser">
      <img src="http://placehold.it/230x240" alt="">
      <a href="#" class="teaserlink">super-toller Link</a>
    </div>
    <!-- /.teaser -->
  </div>
</div>

SassMeister-input.scss

// ----
// Sass (v3.3.14)
// Compass (v1.0.0)
// Zen Grids (v1.4)
// ----

@import "zen";
$zen-column-count: 4; // Set the total number of columns in the grid.
$zen-gutter-width: 10px;

.ym-g25-1 {
  @include zen-grid-item(1, 1);
}

.ym-g25-2 {
  @include zen-grid-item(1, 2);
}

.ym-g25-3 {
  @include zen-grid-item(1, 3);
}

.ym-g25-4 {
  @include zen-grid-item(1, 4);
}



// --------------

.img-teaser {
  position: relative;
}
.img-teaser img {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
}
.img-teaser .teaserlink {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.85);
  color: #e1001a;
  padding: 20px;
  font-size: 18px;
  text-decoration: none;
  overflow: hidden;
}
.img-teaser .teaserlink:hover, .img-teaser .teaserlink:focus {
  background-color: rgba(255, 255, 255, 0.6);
  text-decoration: underline;
}
.img-teaser .teaserlink:after {
  content: "»";
  float: right;
}

SassMeister-output.css

@charset "UTF-8";
.ym-g25-1 {
  float: left;
  width: 25%;
  margin-left: 0%;
  margin-right: -25%;
  padding-left: 5px;
  padding-right: 5px;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  -ms-box-sizing: border-box;
  box-sizing: border-box;
  word-wrap: break-word;
}

.ym-g25-2 {
  float: left;
  width: 25%;
  margin-left: 25%;
  margin-right: -50%;
  padding-left: 5px;
  padding-right: 5px;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  -ms-box-sizing: border-box;
  box-sizing: border-box;
  word-wrap: break-word;
}

.ym-g25-3 {
  float: left;
  width: 25%;
  margin-left: 50%;
  margin-right: -75%;
  padding-left: 5px;
  padding-right: 5px;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  -ms-box-sizing: border-box;
  box-sizing: border-box;
  word-wrap: break-word;
}

.ym-g25-4 {
  float: left;
  width: 25%;
  margin-left: 75%;
  margin-right: -100%;
  padding-left: 5px;
  padding-right: 5px;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  -ms-box-sizing: border-box;
  box-sizing: border-box;
  word-wrap: break-word;
}

.img-teaser {
  position: relative;
}

.img-teaser img {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
}

.img-teaser .teaserlink {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.85);
  color: #e1001a;
  padding: 20px;
  font-size: 18px;
  text-decoration: none;
  overflow: hidden;
}

.img-teaser .teaserlink:hover, .img-teaser .teaserlink:focus {
  background-color: rgba(255, 255, 255, 0.6);
  text-decoration: underline;
}

.img-teaser .teaserlink:after {
  content: "»";
  float: right;
}

SassMeister-rendered.html

<div>
  <div class="ym-g25-1">
    <div class="img-teaser">
      <img src="http://placehold.it/230x240" alt="">
      <a href="#" class="teaserlink">super-toller Link</a>
    </div>
    <!-- /.teaser -->
  </div>
  <div class="ym-g25-2">
    <div class="img-teaser">
      <img src="http://placehold.it/230x240" alt="">
      <a href="#" class="teaserlink">super-toller Link</a>
    </div>
    <!-- /.teaser -->
  </div>
  <div class="ym-g25-3">
    <div class="img-teaser">
      <img src="http://placehold.it/230x240" alt="">
      <a href="#" class="teaserlink">super-toller Link</a>
    </div>
    <!-- /.teaser -->
  </div>
  <div class="ym-g25-4">
    <div class="img-teaser">
      <img src="http://placehold.it/230x240" alt="">
      <a href="#" class="teaserlink">super-toller Link</a>
    </div>
    <!-- /.teaser -->
  </div>
</div>