body {
    
    background-image: url(../img/nevado_huascaran.jpg);
    background-size: 100vw 100vh;
    background-attachment: fixed;
    margin:0;
    font-family:monospace;
}
form {
    width: 450px;
    margin: auto;
    background: rgba(0,0,0,0.4);
    padding: 10px 20px;
    box-sizing: border-box;
    margin-top: 20px;
    border-radius: 7px;
    
}

h2{
    color:#fff;
    text-align: center;
    margin:0;
    font-size: 30px;
    margin-bottom: 20px;
  
    
}

h3{

    text-align:justify;
    margin:0;
    font-size: 30px;
    margin-bottom: 20px;
  
    
}

h4{
    color:#fff;
    text-align:justify;
    margin:0;
    font-size: 15px;
    margin-bottom: 1px;
  
    
}

input, textarea{
    width: 100%;
    margin-bottom: 20px;
    padding: 7px;
    box-sizing: border-box;
    font-size: 17px;
    border: none;
}

textarea{
    min-height: 100px;
    max-height: 200px;
    max-width: 100%;
}

#boton{
    
    background: #31384A;    
    color: #fff;
    padding: 20px;
}

#boton:hover{
    cursor:pointer;
    
}

@media (max-width:480px){
    form{
        width: 100%;
        
    }
}

h1 {
    
    text-align: center;
    color: #fff;
    font-size: 40px;
    background: rgba(0,0,0,0.4);
}