body{
    width: 800px;
    margin:0 auto;
}

@media screen and (max-width: 800px) {
    body{
        width: 100%;
    }
}

textarea{
    width: 100%;
    height: 100px;
    margin-bottom: 10px;
}

video{
    width: 100%;
    border: 2px solid #000;
    background-color: rgb(red, green, blue);
}

#videos {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 1em;
    width: 100%;
    padding: 10px;
}