Youtube playlist in Html and css

Question

@charset "UTF-8";
* {
    box-sizing: border-box;
}

html {
    height: 100%;
    overflow: hidden;
    width: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-size: 16px;
    height: auto;
    line-height: 1;
    overflow-x: hidden;
    padding: 2rem;
    width: 100%;
}

.video {
    position: relative;
    padding-top: 4.1%;
    padding-bottom: 51.95%;
    height: 0;
}

.video iframe {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    min-height: 0;
}

.video-gallery {
    margin-top: 3em;
    position: relative;
    width: 100%;
}

.video-gallery .video {
    animation: 1200ms fadeOut ease;
    animation-fill-mode: both;
    grid-column-start: 1;
    grid-row-start: 1;
    grid-row-end: 7;
    max-height: 19.5em;
    opacity: 0;
    transition: all 300ms ease;
}

.video-gallery input[type="radio"] {
    font-size: 0;
    height: 0;
    opacity: 0;
    padding: 0;
    position: fixed;
    width: 0;
}

.video-gallery input {
    grid-column-start: 1;
    grid-row-start: 1;
}

.video-gallery label {
    color: #000000;
    font-size: 1.25em;
    font-weight: 400;
    grid-column-start: 2;
    margin: 0 !important;
    padding: 1rem 0 1rem 3rem;
    position: relative;
    border-bottom: 1px solid #CCCCCC;
}

.video-gallery label:last-of-type {
    border: 0 none;
}

.video-gallery input[type="radio"]:checked+label {
    color: #E41F35 !important;
}

.video-gallery input[type="radio"]:checked+label:before {
    content: "▶";
    left: 0;
    top: 12px;
    position: absolute;
}

.grid-row {
    display: block;
    height: 56vw;
    max-height: 19.5em;
    position: relative;
}

.grid-row label {
    left: calc(50% + 16px);
    position: relative;
    width: calc(50% - 16px);
}

.grid-row .video {
    padding: 0;
    position: absolute;
    top: 0;
    width: 0;
}

.grid-row:after {
    content: "";
    clear: both;
    display: table;
}

#video-1:checked~.video-1,
#video-2:checked~.video-2,
#video-3:checked~.video-3,
#video-4:checked~.video-4,
#video-5:checked~.video-5,
#video-6:checked~.video-6 {
    animation: 1200ms fadeIn ease;
    animation-fill-mode: both;
    opacity: 1;
    width: 50%;
}

@keyframes fadeOut {
    0% {
        display: block;
        height: 56vw;
        opacity: 1;
        width: 50%;
    }
    25% {
        display: block;
        height: 56vw;
        opacity: 1;
        width: 50%;
    }
    49% {
        display: block;
        height: 56vw;
        opacity: 0;
        width: 50%;
    }
    50% {
        display: none;
        height: 0;
        opacity: 0;
        width: 0;
    }
}

@keyframes fadeIn {
    0% {
        opacity: 0;
        width: 0;
    }
    49% {
        display: none;
        height: 0;
        opacity: 0;
        width: 0;
    }
    50% {
        display: block;
        height: 56vw;
        opacity: 0;
        width: 50%;
    }
    100% {
        display: block;
        height: 56vw;
        opacity: 1;
        width: 50%;
    }
}

@supports (display: grid) {
    @keyframes fadeOut {
        0% {
            display: block;
            height: 56vw;
            opacity: 1;
            width: 100%;
        }
        25% {
            display: block;
            height: 56vw;
            opacity: 1;
            width: 100%;
        }
        49% {
            display: block;
            height: 56vw;
            opacity: 0;
            width: 100%;
        }
        50% {
            display: none;
            height: 0;
            opacity: 0;
            width: 0;
        }
    }
    @keyframes fadeIn {
        0% {
            opacity: 0;
            width: 0;
        }
        49% {
            display: none;
            height: 0;
            opacity: 0;
            width: 0;
        }
        50% {
            display: block;
            height: 56vw;
            opacity: 0;
            width: 100%;
        }
        100% {
            display: block;
            height: 56vw;
            opacity: 1;
            width: 100%;
        }
    }
}

.grid-row {
    align-items: start;
    display: grid;
    grid-column-gap: 16px;
    grid-row-gap: 0;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr 1fr 1fr 1fr 1fr;
    width: 100%;
}

.grid-row label {
    left: auto;
    width: 100%;
}

.grid-row .video {
    position: relative;
    width: 100%;
}

@media (max-width: 767px) {
    .video-gallery {
        display: flex;
        flex-direction: column;
        height: auto;
        max-height: none;
    }
    .video-gallery label {
        left: auto;
        order: 2;
        width: 100%;
    }
    .video-gallery .video {
        order: 1;
        padding-top: 4.1%;
        padding-bottom: 51.95%;
        position: relative;
        top: auto;
        width: 100%;
    }
    #video-1:checked~.video-1,
    #video-2:checked~.video-2,
    #video-3:checked~.video-3,
    #video-4:checked~.video-4,
    #video-5:checked~.video-5,
    #video-6:checked~.video-6 {
        width: 100%;
    }
    @keyframes fadeOut {
        0% {
            display: block;
            height: 56vw;
            opacity: 1;
        }
        25% {
            display: block;
            height: 56vw;
            opacity: 1;
        }
        49% {
            display: block;
            height: 56vw;
            opacity: 0;
        }
        50% {
            display: none;
            height: 0;
            opacity: 0;
        }
    }
    @keyframes fadeIn {
        0% {
            opacity: 0;
        }
        49% {
            display: none;
            height: 0;
            opacity: 0;
        }
        50% {
            display: block;
            height: 56vw;
            opacity: 0;
        }
        100% {
            display: block;
            height: 56vw;
            opacity: 1;
        }
    }
}

<!DOCTYPE html>
<html>
<link rel="stylesheet" href="1.css">

<body>
    <div class="grid-row reverse video-gallery">
        <input type="radio" value="1" name="video-list" id="video-1" checked="checked" /><label for="video-1">Option 1</label>
        <input type="radio" value="2" name="video-list" id="video-2" /><label for="video-2">Option 2</label>
        <input type="radio" value="3" name="video-list" id="video-3" /><label for="video-3">Option 3</label>
        <input type="radio" value="4" name="video-list" id="video-4" /><label for="video-4">Option 4</label>
        <input type="radio" value="5" name="video-list" id="video-5" /><label for="video-5">Option 5</label>
        <input type="radio" value="6" name="video-list" id="video-6" /><label for="video-6">Option 6</label>

        <!-- videos -->
        <div class="video video-1">
            <iframe width="560" height="315" src="https://www.youtube.com/embed/ROqDTIxRX0Y" frameborder="0" allowfullscreen></iframe>
        </div>

        <div class="video video-2">
            <iframe width="560" height="315" src="https://www.youtube.com/embed/9iGoDNlKY-g" frameborder="0" allowfullscreen></iframe>
        </div>

        <div class="video video-3">
            <iframe width="560" height="315" src="https://www.youtube.com/embed/l70UhhNalqA" frameborder="0" allowfullscreen></iframe>
        </div>

        <div class="video video-4">
            <iframe width="560" height="315" src="https://www.youtube.com/embed/XDrB5c4-c9Y" frameborder="0" allowfullscreen></iframe>
        </div>

        <div class="video video-5">
            <iframe width="560" height="315" src="https://www.youtube.com/embed/UXP307MGQzs" frameborder="0" allowfullscreen></iframe>
        </div>

        <div class="video video-6">
            <iframe width="560" height="315" src="https://www.youtube.com/embed/0kY0Q5hdjDI" frameborder="0" allowfullscreen></iframe>
        </div>
        <!-- videos -->
    </div>
</body>

</html>

I created this video player by some online code but I want know how to set options below and video above like video player is above and options to select is below video player. If I use this code in mobile it will work fine or need to add any code ,that it will be responsive or need to add anything? Thanks in advance.

Answer 1

use bootstrap to make it responsive https://www.w3schools.com/bootstrap4/