*{
margin:0;
padding:0;
}

body{
font-family: Arial;
background: url("https://wallpapercave.com/wp/wp8890191.jpg");
}

.contenedor{
width:70%;
margin:auto;
margin-top:30px;
background:#ffffffcc;
padding:30px;
border:8px dashed red;
border-radius:20px;
}

h1{
text-align:center;
color:red;

margin-bottom:30px;
}

.imagen{
text-align: center;
}
.imagen img{
width:300px;
border-radius:20px;
}

.pregunta{
background:#e8e8e8;
padding:20px;
border:10px solid red;
}
h2{
margin-bottom:10px;
}
footer{
background:gray;
color:white;
text-align:center;
padding:15px;
margin-top:20px;
}
.boton{
text-align:center;
margin-top:30px;
}
.b{
  display: inline; 
  width: 60px;
  height: 30px;
padding: 5px;
  background: #C0C0C0;  
  border: dashed;
}