stylesheet.css

body {
    background-color: #000;
    color: #fff;
    font-family: 'Consolas', monospace;
    animation: fadeInAnimation ease 3s;
    animation-iteration-count: 1;
    animation-fill-mode: forwards;
}

@keyframes fadeInAnimation {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

#splashscreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #000000;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

a {
    color: #00ffff;
    background-color: transparent;
    text-decoration: none;
}

a:hover,
a:active {
    text-decoration: underline;
}

@keyframes blink {
    0% {
        opacity: 1;
    }
    50% {
        opacity: 0.3;
    }
    100% {
        opacity: 1;
    }
}

a.blink-animation {
    animation: blink 2s infinite;
}

.mute-button {
    position: fixed;
    bottom: 20px;
    left: 1px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 24px;
    color: #fff;
}

.mute-button:hover {
    color: #00ffff;
}

#volumeSlider {
    position: fixed;
    bottom: 27px;
    left: 55px;
    width: 100px;
    height: 5px;
    background-color: #999999;
    -webkit-appearance: none;
    appearance: none;
    outline: none;
}

#volumeSlider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    background-color: #fff;
    border-radius: 50%;
    cursor: pointer;
}

#volumeSlider::-moz-range-thumb {
    width: 12px;
    height: 12px;
    background-color: #fff;
    border-radius: 50%;
    cursor: pointer;
}

#volumeSlider::-ms-thumb {
    width: 12px;
    height: 12px;
    background-color: #fff;
    border-radius: 50%;
    cursor: pointer;
}