body {
    background-color: #000;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    overflow-x: hidden;
    box-sizing: border-box;
    padding: 1rem;
    overflow-y: auto;
    font-family: 'Oldenburg';
}

.hbd, figcaption {
    font-size: 25px;
    color: #2ffafa;
    background-color: rgba(0, 0, 0, 0.6);
    padding: 15px;
    border-radius: 20px;
    animation: 
        bounce 2s ease infinite,
        cambio-borde 5s linear infinite;
    transform: scale(1);
    max-width: 95%;
    text-align: center;
    margin: 10px auto;
    text-shadow: 0 0 5px #2ffafa, 0 0 10px #2ffafa;
    box-shadow: 0 0 10px rgba(47, 250, 250, 0.5);
}

.img {
    width: 15vw;
    height: auto;
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 0 8px rgba(47, 250, 250, 0.5);
    animation: 
        bounce 2s ease infinite,
        cambio-borde 5s linear infinite;
    
}


#videoFondo {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    object-fit: cover;
    z-index: -1;
    opacity: 0.3;
}

audio {
    display: none;
}

figure {
    margin: 0; 
    margin-top: 5px;
    text-align: center; 
}

figcaption {
    width: 100%;
}

@keyframes cambio-borde {
    0%   { border-color: violet; }
    25%  { border-color: #2ffafa; }
    50%  { border-color: yellow; }
    75%  { border-color: lightblue; }
    100% { border-color: violet; }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

@media only screen and (max-width: 768px) {
    body {
        padding: 0.8rem;
    }
    
    .hbd {
        font-size: 1.4rem;
        padding: 12px;
        border-radius: 18px;
        margin: 8px 0;
    }
    
    .img {
        width: 40vw;
        max-width: 130px;
        min-width: 90px;
    }
}

@media only screen and (max-width: 480px) {
    .hbd {
        font-size: 1.2rem;
        padding: 10px;
        border-radius: 15px;
        border-width: 2px;
        margin: 5px 0;
    }
    
    .img {
        width: 45vw;
        max-width: 110px;
        min-width: 80px;
        border-radius: 6px;
    }
    
    @keyframes bounce {
        0%, 100% {
            transform: translateY(0);
        }
        50% {
            transform: translateY(-5px);
        }
    }
    
    #videoFondo {
        opacity: 0.2;
    }
}