html{
  height: 100%;  
  overflow: hidden;
}
body{
  font-family: 'Lato', sans-serif; /* ou Open Sans, Lato */
  height: 100%;
  background: linear-gradient(90deg, #ffd356 50%, #ccc 50%);
}
section{
  display: flex;
  height: 100%;
  flex-direction: column;
  text-align: center;
  justify-content: center;
}
.coluna p{
  display: block;
  width: 300px;
  color: #fff;
  background-color: #000;
  font-weight: 700;
  padding: 5px 0;
  margin: 5px auto;
}