body {
  background-image: url("fondo azul.jpeg");
}
.marco {
    padding: 90px;
    width: 600px;
    background-color: white;
    margin: auto;

    border: 20px solid transparent;
    border-radius: 20px;
    border-image: url("fondo cafe.jpeg") 30 round;
}

.contenedor {
    display: flex;
    flex-direction: column;
}
    
.arriba {
    min-height: 90px;
}


.abajo {
    min-height: 400px;
}

.cajita-texto {
    width: 300px;
    height: 100px;
    border: 8px solid pink;
    background-color: white;
    padding: 10px;
    overflow: auto;
    border-image: url("fondo negro.png") 30 round;
    
    position: relative;
    left: 350px;
    margin-top: -10px;
}
    .welcome-blue {
       position: relative;
    left: 150px;
    margin-top: -90px;

}