gnutube/static/styles.css

body {
    background-color: #181818;
    font-family: Arial, Helvetica, sans-serif;
    color: #e8eaed;
    word-break: break-all;
    margin-left: 9%;
    margin-right: 9%;
}

video {
    width: 100%;
    height: 700px;
}

.search {
    text-align: center;
}

.search img {
    float: left;
    margin-left: 35px;
    margin-top: 20px;
    width: 55px;
    height: 40px;
}

.search h3 {
    margin-left: 10px;
}

.banner {
    width: 100%;
    height: 230px;
}

.search input {
    width: 500px;
    margin-bottom: 30px;
    margin-top: 20px;
    padding: 10px;
    border: 1px solid #202020;
    background-color: #121212;
    color: inherit;
    font-family: inherit;
    font-size: 17px;
    outline: none;
}

.video-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
    grid-gap: 1.5rem;
    justify-items: center;
    padding: 0;
    margin-bottom:50px;
}

.video-results a {
    text-decoration: none;
    color: inherit;
}

.video-results img {
    width: 420px;
    height: 220px;
    border: 1px solid #bd93f9;
}

.channel-name a , 
.small-channel a {
    color: #bd93f9;
    text-decoration: none;
}

.small-channel img {
    width: 50 !important;
    height: 50 !important;
    border-radius: 50%;
    vertical-align: middle;
    margin-right: 20px;
}

.description {
    width: 50%;
    font-size: 14px;
}

/* mobile view */
@media only screen and (max-width: 900px) {
    body {
        margin-left: 0%;
        margin-right: 0%;
    }
    
    video {
        height: auto;
    }

    .search input {
        width: 90%;
    }

    .banner {
        height: 100px;
    }

    .search img {
        float: unset;
        width: 80px;
        height: 60px;
        margin-left: 0%;
    }
}