body {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 24px;
    background: #1a453a;
    color: antiquewhite;
}
a {
    text-decoration: none;
    color: #c0ceff;
    cursor: pointer;
}
a:hover {
    text-decoration: none;
}
ul {
    margin-bottom: 40px;
}
li {
    line-height: 2rem;
}
.welcome-container {
    padding: 50px;
}
.back-ref {
    position: sticky;
    top: 20px;
    left: 10px;
}
.welcome-container {
    padding: 50px;
}


/* gallery module */
.gallery img {
    min-height: 50vh;
    max-width: calc(100% - 80px);
    max-height: calc(100vh - 20px - 100px);
    margin: 50px auto 80px auto;
    display: block;
    border-radius: 5px;
}
.bottom {
    font-weight: bold;
    margin-top: 50vh;
    margin-bottom: 100px;
    text-align: center;
}


/* player module */
@keyframes MOVE-BG {
    0% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(-20%) translateY(-20%);
    }
    100% {
        transform: translateX(0);
    }
}
.player-overlay {
    position: fixed;
    overflow: hidden;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}
.player-overlay-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 150%;
    height: 150%;
    background-size: cover !important;

    animation-name: MOVE-BG;
    animation-duration: 100s;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}
.pause-button {
    width: 50vw;
    height: 50vw;
    max-width: 50vh;
    max-height: 50vh;
    position: fixed;
    top: 50%;
    left: 50%;
    color: #c0ceff;
    transform: translate(-50%, -50%);
    border: 2px solid #c0ceff;
    border-radius: 50%;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}
.pause-button:hover {
    color: #ffffff;
    border-color: #ffffff;
}