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

body {
    font-family: Tahoma, Verdana, Arial, sans-serif;
    overflow: scroll;
}

header {
    text-align: center;
    font-size: 1.2rem;
    padding: .5rem;
}

.files {
    position: absolute;
    left: 0;
    width: 100vw;
    height: fit-content;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    column-gap: 1rem;
    justify-content: space-around;
    padding: 1rem;
    background-color: #444;
}

.file {
    width: 15vw;
    padding: 1rem;
    border: 1px solid white;
    border-radius: .5rem;
    margin: 1rem;
    cursor: pointer;
    background-color: #888;

}

.active {
    background-color: white;
    color: black;
}

.file p {
    text-align: center;
    font-size: .8rem;
}

.file img {
    width: 100%;
    border-radius: .25rem;
}

.viewer img {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
}



button {
    width: 8rem;
    border: 1px solid #ccc;
    padding: .25rem 1rem;
    background: white;
    border-radius: .25rem;
    cursor: pointer;
}

button:hover {
    background-color: #DDD;
    border: 1px solid black;
}

button.active {
    background-color: #ccc;
    color: white;
}