html{
    --backgroudColor: #212121;
    background: var(--backgroudColor);
    background-color: var(--backgroudColor);
}
body{
    font-family: 'proxima-nova', Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;

    padding: 0;
    margin: 0;
    background: var(--backgroudColor);
    background-color: var(--backgroudColor);
}
div#header{
    height: 3rem;
    background-color: #00BCD4;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #fff;
    font-weight: bold;
    padding: 0 1rem;
}
    div#header button{
        display: flex;
        justify-content: center;
        align-items: center;
        border-radius: 1rem;
        border: 0;
        outline: none;
        padding: .5rem 1rem;
        font-size: 1rem;
        background-color: #fff;
        appearance: none;
        font-weight: bold;
        font-size: .85rem;
        color: #00BCD4;
    }
    div#header button:disabled{
        background-color: #80DEEA;
    }
    div#header button:active{
        background-color: #B2EBF2;
    }
    div#header button::before{
        content: url(../img/download-solid.svg);
        width: 1rem;
        margin-right: .5rem;
    }
div#loader{
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    display: none;
    align-items: center;
    justify-content: center;
}
    div#loader::before{
        content: url(../img/three-dots.svg);
        width: 10rem;
    }
iframe#iframe{
    display: none;
    width: 100vw;
    height: calc(100vh - 3rem);
}
img#img{
    display: none;
    width: calc(100vw - 2rem);
    height: calc(100vh - 5rem);
    object-fit: contain;
    padding: 1rem;
}
video#video{
    display: none;
    width: 100vw;
    height: calc(100vh - 3rem);
}
audio#audio{
    display: none;
    width: calc(100vw - 2rem);
    padding: 1rem;
}

div#info{
    position: fixed;
    top: 3rem;
    left: 0;
    bottom: 0;
    right: 0;
    display: none;
    align-items: center;
    justify-content: center;
}
div#info::before{
    content: attr(data-message);
    background-color: #fff;
    padding: 1rem;
    border-radius: .5rem;
    margin: 1rem;
}