aside, article {
    display: block;
}

body{
    background-color: burlywood;
    background-image: url("fract192.png");
    width: 1300px;
}
h1{
    color: black;
    text-align: left;
    padding: 20px;
}
.boton {
    width: 200px;
    padding: 10px;
    cursor: pointer;
    font-weight: bold;
    font-size: 125%;
    color: #000000;
    border: 1px solid #3366cc;
    border-radius: 5px;  
    text-align: center;
  }
  .boton.one{
      background-color: rgb(71, 132, 225);
  }
  .boton.two{
      background-color: rgb(177, 128, 211); 
  }
  .boton.three{
      background-color: rgba(145, 211, 160, 0.954);
  }
  .boton:hover {
      background-color: blanchedalmond;
  }
  aside{
    float: right;
    width: 390px;
    background-color: aquamarine;
    margin-right: 5px;
    padding: 25px;
    font-size: 20px;
}
.articulo{
    float: left;
    width: 800px;
    font-size: 16px;
    background-color: bisque;
    padding: 20px;
}