<table>
   <thead>
      <tr><th></th><th>50y</th><th>55y</th><th>60y</th><th>65y</th><th>70y</th></tr>
   </thead>
   <tbody>
      <tr><th>160cm</th><td>20</td><td>21</td><td>23</td><td>25</td><td>27</td></tr>
      <tr><th>165cm</th><td>18</td><td>20</td><td>22</td><td>24</td><td>26</td></tr>
      <tr><th>170cm</th><td>17</td><td>19</td><td>21</td><td>23</td><td>25</td></tr>
      <tr><th>175cm</th><td>16</td><td>18</td><td>20</td><td>22</td><td>24</td></tr>
   <tbody>
</table>
<br><br>
<small>Quelle: <a href="http://css-tricks.com/simple-css-row-column-highlighting/">Chris Coyier</a></small>

table {
   overflow: hidden;
   border-collapse: collapse;
}

td, th {
   padding: 1em;
   position: relative;
}

tbody tr:hover,
td:hover::after,
th:hover::after { background-color: #ffa; }

td:hover::after,
thead th:not(:empty):hover::after {
   content: '';
   position: absolute;
   left: 0;
   right: 0;
   top: -100vh;
   bottom: -100vh;
   z-index: -1;
}

<h2>Lorem ipsum dolor sit amet</h2>
<p>Consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec quam felis, ultricies nec, pellentesque eu, pretium quis, sem. Nulla consequat massa quis enim. Donec pede justo, fringilla vel, aliquet nec, vulputate eget, arcu. In enim justo, rhoncus ut, imperdiet a, venenatis vitae, justo. Nullam dictum felis eu pede mollis pretium. Integer tincidunt. Cras dapibus. Vivamus elementum semper nisi. Aenean vulputate eleifend tellus. Aenean leo ligula, porttitor eu, consequat vitae, eleifend ac, enim. Aliquam lorem ante, dapibus in, viverra quis, feugiat a, tellus. Phasellus viverra nulla ut metus varius laoreet. Quisque rutrum. Aenean imperdiet.</p>

p {
column-count: 2;
column-gap: 2em;
column-rule: solid 1px #aaa;

-moz-column-count: 2;
-moz-column-gap: 2em;
-moz-column-rule: solid 1px #aaa;

-webkit-column-count: 2;
-webkit-column-gap: 2em;
-webkit-column-rule: solid 1px #aaa;
}

<div class="pulse">⚑<span></span></div>

@keyframes pulse {
    0% {
        transform: scale(0);
        opacity: 0.5;
    }

    100% {
        transform: scale(3);
        opacity: 0;
    }
}

.pulse {
    position: relative;
    display: inline-block;
}

.pulse span {
    z-index: 1;
    position: absolute;
    top: 12px;
    left: -10px;
    display: block;
    width: 30px;
    height: 30px;
    border: 2px solid #8f1b1b;
    border-radius: 50%;
    box-shadow: 0 0 10px 5px #ba2323;

    -webkit-animation: pulse 2s infinite ease-out;
    animation: pulse 2s infinite ease-out;
}

@-webkit-keyframes pulse {
    0% {
        transform: scale(0.3);
        opacity: 0.5;
    }

    100% {
        transform: scale(2);
        opacity: 0;
    }
}

body {
   padding: 4em;
   text-align: center;
   font-size: 200%;
   background-image: -webkit-radial-gradient(50% 50%, circle cover, #FFF, #5CB3FF 90%);
   background-image: -moz-radial-gradient(50% 50%, circle cover, #FFF, #5CB3FF 90%);
   background-image: radial-gradient(50% 50%, circle cover, #FFF, #5CB3FF 90%);
}

<div class="">Pur</div>
<div class="a">Rotation</div>
<div class="b">Verschoben</div>
<div class="c">Klein</div>
<div class="d">Schräg</div>
<div class="e">Perspektive</div>

.a { transform: rotate(45deg); }
.b { transform: translateX(2em); }
.c { transform: scale(0.5); }
.d { transform: skewX(30deg); }
.e { transform:
      perspective(200px)
      rotateY(45deg);
   }

/* helper styles */
body {
   display: flex;
   justify-content: space-around;
   flex-wrap: wrap;
}

div {
   float: left;
   width: 5em;
   margin: 1em;
   padding: .5em;
   border: .5em solid #00bd5a;
   background-color: #0082d1;
   color: white;
   line-height: 4em;
   text-align: center;
}

<div class="">Pur</div>
<div class="a">Transparenz</div>
<div class="b">Schatten</div>
<div class="c">Rundungen</div>
<div class="d">Farbverläufe</div>
<div class="e">Filter</div>

.a { opacity: 0.5; }
.b { box-shadow: 10px 10px 10px #aaa; }
.c { border-radius: 1em; }
.d { background-image: linear-gradient(-45deg, #0082d1 0%, yellow 100%); }
.e { -webkit-filter: invert(1); }

/* helper styles */
body {
   display: flex;
   justify-content: space-around;
   flex-wrap: wrap;
}

div {
   float: left;
   width: 5em;
   margin: 1em;
   padding: .5em;
   border: .5em solid #00bd5a;
   background-color: #0082d1;
   color: white;
   line-height: 4em;
   text-align: center;
}

<style>
   body {
      display: grid;
      grid-template-columns: 1fr 1fr;
      grid-gap: 1rem;
   }
   img { width: 100%; }
</style>
<div><img src="balham.jpg"></div>
<div><img src="balham.jpg" class="blur"></div>
<div><img src="balham.jpg" class="grayscale"></div>
<div><img src="balham.jpg" class="saturate"></div>
<div><img src="balham.jpg" class="sepia"></div>
<div><img src="balham.jpg" class="multi"></div>

.blur {
   filter: blur(5px) }
.grayscale {
   filter: grayscale(1) }
.saturate {
   filter: saturate(5) }
.sepia {
   filter: sepia(1) }
.multi {
   filter: blur(4px) invert(1) opacity(0.5) }

<div>Hallo</div>

:root {
  --primary-color: #00bd5a;
  --space-md: 1rem;
}
div {
   color: var(--primary-color);
   border: 3px solid var(--primary-color);
   padding: var(--space-md);
}