* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    height: 100vh;
    font-family: Arial, Helvetica, sans-serif;
    padding: 1rem;
    background-color: orangered;
    transition: background-color 5s ease;
    display: flex;
    justify-content: center;
    align-items: center;
}

.pile {
    background-color: whitesmoke;
    padding: 1.5rem;
    width: 30rem;
    max-width: 100%;
    border: 1px solid green;
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-height: 80vh;
    overflow: auto;
    align-items: center;
}

h1 {
    background: orange;
    width: fit-content;
    text-transform: uppercase;
    font-size: 1rem;
    font-weight: 400;
    line-height: normal;
}

ol {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

li {
    margin-left: 1rem;
    line-height: 1.25rem;
    color: green;
}

.questions a {
    color: black;
    text-decoration: none;
}

.number-links {
    display: flex;
    gap: 1rem;
}

a:hover,
::selection {
    background-color: yellow;
    color: blue;
}

.video-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
    opacity: 1;
    display: none;
    filter: contrast(100);
    mix-blend-mode: color-dodge;
}

.video-preview {
    position: fixed;
    width: 400px;
    height: auto;
    display: none;
    pointer-events: none;
    border: 1px dashed green;
    z-index: 999;
    object-fit: cover;
}