body{
    background-image: url(back1.png);
    font-family: "Courier New", monospace;
    background-size: auto;
    background-repeat: repeat;
    background-position: top center;
    background-attachment: scroll;
    margin: 0;
    padding: 0;
}

header {
    width: 90%;
    max-width: 900px;
    margin: 40px auto;
    padding: 25px;
    background: rgba(255,255,255,0.69);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    text-align: center;

}

header img {
    width: 150px;
    max-width: 80%;
    height: auto;
}

h1 {
    font-size: 4rem;
    animation: titleFlash 1s infinite alternate;
}

@keyframes titleFlash {
    from {
        color: black;
    }
    to {
        color: red;
    }
}

main {
    width: 90%;
    max-width: 900px;
    margin: auto;
}

main div {
    background: rgba(255,255,255,0.69);
    margin-bottom: 30px;
    padding: 25px;
    border-radius: 18px;
}

main h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 20px;
    animation: subtitleFlash 1s infinite alternate;
}

main img {
    display: block;
    margin: 10px auto;
    max-width: 80%;
    height: auto;

}

main img.fullwidth {
    display: block;
    width: calc(100% + 50px);
    max-width: none;
    margin: 20px -25px;
    border-radius: 0;

}

@keyframes subtitleFlash {
    from {
        color: red;
    }
    to {
        color: black;
    }
}

main p {
    text-align: center;
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 15px;
}

main ul {
    list-style: none;
    width: fit-content;
    margin: 20px auto;
    text-align: left;
    font-size: 1.1rem;
    line-height: 1.8;
    padding-left: 0;
}

main ul li {
    margin: 8px 0;
}

main ul li::before {
    content: "\2713\0020";
    color: red;
    font-weight: bold;
}

main iframe {
    display: block;
    margin: 20px auto;
    max-width: 100%;
}

footer {
    width: 100%;
    padding: 8px 0;
    background: rgba(255,255,255,0.69);
    border-top: 1px solid white;
    text-align: center;
    font-size: 0.75rem;
}

@media (max-width: 900px) {
    header img {
        width: 100px;
    }
    h1 {
        font-size: 3rem;
        animation: titleFlash 1s infinite alternate;
    }
}

@media (max-width: 600px) {
    header img {
        width: 70px;
    }
    h1 {
        font-size: 3rem;
        animation: titleFlash 1s infinite alternate;
    }
}

.gif{
    height: 200px;
    width: auto;
}

body::before {
    content: "";
    position: fixed;
    inset: -100px;
    background: url("picmix.com_2671403.gif") repeat;
    background-size: auto;
    pointer-events: none;
    z-index: 9999;
    animation: sparkleFall 15s linear infinite;
}

@keyframes sparkleFall {
    from {
        background-position: 0 0;
    }
    to {
        background-position: 0 600px;
    }

}