Button border

by Creak

HTML

<button>
<div id="foo" class="text first">Foo</div>
<div id="Goo" class="text next">Goo</div>
</button>

CSS

button {
  width: 100%;
  font-size: 0;  
  padding: 0;
  margin: 0
  box-sizing: border-box;
  border: none;
  outline: none;
  background-color: #454545; 
}

.text {
  color: #fff;
  font-size: 16px;
  width: 50%;
  background-color: #d2d2d2;
  display: inline-block;
}