pEGvZO

index.html

<div class="square">
  <h2>B</h2>
</div>

pegvzo.markdown

pEGvZO

A Pen by dannievinther on CodePen.

License.

style.css

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
}

a,
a:visited,
a:focus,
a:active,
a:link {
  text-decoration: none;
  outline: 0;
}

a {
  color: currentColor;
  transition: .2s ease-in-out;
}

h1, h2, h3, h4 {
  margin: .3em 0;
}

ul {
  padding: 0;
  list-style: none;
}

img {
  vertical-align: middle;
  height: auto;
  width: 100%;
}

body {
  background: linear-gradient(to right, #171717 50%, #F3B833 0);
  position: relative;
  display: flex;
}

.square {
  margin: auto;
  display: inline-block;
  height: 30vw;
  width: 30vw;
  border: 5px solid #f3b833;
  color: #f3b833;
  text-transform: uppercase;
  display: flex;
  font-family: sans-serif;
  font-size: 10vw;
  padding: 1.2vw;
  line-height: .75;
  word-break: break-word;
  text-align: center;
  mix-blend-mode: difference;
  /*box-shadow: 0 15px 35px rgba(50, 50, 90, 0.1), 0 5px 15px rgba(0, 0, 0, 0.07);*/
}

h2 {
  margin: auto;
}