body{
    background:url(cabalgata1.jpg) no-repeat; 
    background-size: cover;
}

.container{
    position:absolute;
    
    bottom:10px;
    right:0;
    left:0;
    background:rgba(255,255,255,0.8);
    border-radius:15px;
    text-align:center;
    padding:2%;
}

@media (max-width:800px){
    body{
        background:url(movil.jpg) no-repeat; 
        background-size: cover;
    }
}