body {
    z-index: 999;
}


.botonera{
    top: 50%;
    margin-top: 5vh;
    z-index: 999;
}

.boton{
    font-size: 25px;
    top: 50%;
    z-index: 999;
} 
    /* From uiverse.io by @Mike11jr */
.btn {
   width: 170px;
   height: 40px;
   font-size: 1.6em;
   cursor: pointer;
   background-color: #171717;
   color: #fff;
   border: none;
   border-radius: 5px;
   transition: all .4s;
   font-family: 'Patrick Hand', cursive;
  }
  
  .btn:hover {
   border-radius: 5px;
   transform: translateY(-10px);
   box-shadow: 0 7px 0 -2px #f85959,
    0 15px 0 -4px #39a2db,
    0 16px 10px -3px black;
  }
  
  .btn:active {
   transition: all 0.2s;
   transform: translateY(-5px);
   box-shadow: 0 2px 0 -2px #f85959,
    0 8px 0 -4px #39a2db,
    0 12px 10px -3px black;
  }