<h1 class="welcome">CSS3 Arrow Buttons</h1>

<div class="button-bar">
  <a href="#" class="button prev">Previous</a>
  <a href="#" class="button next">Next</a>
</div>

/* LESS Variables */
/* -------------- */

/* General */
@general-spacer: 20px;
@h1-size: 22px;

/* Button Bar */
@button-bar-width: 200px;
@button-bar-bg-color: #ededed;

/* Button */
@button-bg-color: #0d5287;
@button-bg-hover-color: #0585e8;
@button-text-padding: 14px;
@button-text-color: white;
@button-height: 22px;
@button-text-size: 14px;

/* Elements */
/* -------- */
html {
  line-height: 1.5;
  text-align: center;
}

h1 { text-size: @h1-size; }
a { text-decoration: none; }

/* Layout */
/* ------ */
h1.welcome, .button-bar {
  margin: @general-spacer auto;
  height: auto; 
}

.button-bar {
  background: @button-bar-bg-color;
  padding: @general-spacer * 2;
}

/* General Button */
/* -------------- */
.button {
  position: relative;
  margin: 0;
  padding-left: @button-text-padding;
  padding-right: @button-text-padding;
  padding-top: (@button-text-padding / 5);
  padding-bottom: (@button-text-padding / 5);
  background: @button-bg-color;
  color: @button-text-color;
  font-size: @button-text-size;
}

.button::after {
  content: '';
  position: absolute;
  top: 0;
  width: 0;
  height: 0;
}

.button:hover { background: @button-bg-hover-color; }

/* Arrow Buttons */
/* ------------- */
.next::after, .prev::after { border-style: solid; }

/* Next Button */
/* ----------- */
.next::after {
  right: -@button-height;
  border-width: @button-height / 2;
  border-color: transparent transparent transparent @button-bg-color;
}

.next:hover::after {
  border-left-color: @button-bg-hover-color;
}

/* Prev Button */
/* ----------- */
.prev::after {
  left: -@button-height;
  border-color: transparent @button-bg-color transparent transparent;
  border-width: @button-height / 2;
}

.prev:hover::after {
  border-right-color: @button-bg-hover-color;
}