html {
    font-size: 1px;
}

body {
    @media (min-width: 1000px) {
        font-size: 20rem;
    }
    @media (max-width: 999px) {
        font-size: 16rem;
    }
    font-family: arial;
}

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
}

input {
    font-family: inherit;
    font-size: inherit;
}

.button_class_1 {
    font-weight: bolder;
    background-color: lightblue;
    border-radius: 10px;
    padding: 5px;
}

.button_class_1:hover {
    background-color: dodgerblue;
}

.button_class_1:disabled {
    background-color: lightgray;
}

.button_class_2 {
    font-weight: bolder;
    background-color: lightblue;
    border-radius: 10px;
    padding: 5px;
}

#message_box {
    position: fixed;
    bottom: 20rem;
    right: 20rem;
    width: 300rem;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 10rem;
    z-index: 1000;
}

.message {
    background-color: #333;
    color: white;
    padding: 10rem;
    border-radius: 6rem;
    opacity: 0.5;
}

#popular_video_list_div {
    display: flex;
    flex-wrap: wrap;
}

#gaming_video_list_div {
    display: flex;
    flex-wrap: wrap;
}

@media (min-width: 1000px) {
    #container {
        flex-direction: row;
    }

    #video_container_div {
        width: 70%;
        margin-right: 20px;
    }

    #side_bar_div {
        width: 25%;
    }
}

@media (max-width: 999px) {
    #container {
        flex-direction: column;
    }

    #video_container_div {
        order: 1;
    }

    #side_bar_div {
        order: 2;
    }
}