streamlabs chat box, clean theme custom style. https://i.imgur.com/JxDbf6D.png

html.html

<link href="https://fonts.googleapis.com/css2?family=M+PLUS+Rounded+1c:wght@800&display=swap" rel="stylesheet">
<link href="https://fonts.googleapis.com/css2?family=Nunito:wght@800&display=swap" rel="stylesheet">

<!-- item will be appened to this layout -->
<div id="log" class="sl__chat__layout">
</div>

<!-- chat item -->
<script type="text/template" id="chatlist_item">
  <div data-from="{from}" data-id="{messageId}">
    <span class="meta" style="color: {color}">
      <span class="badges">
      </span>
      <span class="name">{from}</span>
    </span>

    <span class="message">
      {message}
    </span>
  </div>
</script>

style.css

:root {
  --font_size: {font_size};
  --background_color: {background_color};
  --text_color: {text_color};
  --message_hide_delay: {message_hide_delay};
}


*,
*:before,
*:after {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    overflow: hidden;
}

body {
    /* background: var(--background_color); */
    background: transparent;
    font-family: "Nunito", "M PLUS Rounded 1c", sans-serif;
    font-weight: 700;
    font-size: var(--font_size);
    line-height: 1.5em;
    color: var(--text_color);
}

#log > div {
    animation: slideInUp .3s ease forwards, fadeOut 0.5s ease var(--message_hide_delay) forwards;
}

#log {
    display: table;
    position: absolute;
    bottom: 0;
    left: 0;
    padding: 0;
    width: 100%;
    table-layout: fixed;
}

#log > div {
    display: table-row;
}

#log > div.deleted {
    visibility: hidden;
}

.message,
.meta {
    vertical-align: top;
    display: table-cell;
    padding-bottom: 0.1em;
}

.message {
    filter: drop-shadow(0 0 1.5px black) drop-shadow(0 1px 0 hsla(0, 0%, 0%, .75));
}

.meta .name {
    filter: drop-shadow(0 0 1px hsla(0, 0%, 0%, .75)) drop-shadow(0 1px 0 hsla(0, 0%, 0%, .75));
}

.meta {
    width: 35%;
    text-align: right;
    padding-right: 0.5em;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}

.badges {
    margin-right: -.3em;
}

.badge {
    display: inline-block;
    margin-right: 0.2em;
    position: relative;
    height: 0.9em;
    vertical-align: middle;
    top: -0.075em;
    filter: drop-shadow(0 1px .5px black);
}

.badge:last-of-type {
    // margin-right: 0;
}


.message {
    word-wrap: break-word;
    width: 65%;
}


#log .emote {
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    padding: 0.4em 0.2em;
    position: relative;
}

#log .emote img {
    display: inline-block;
    height: 1em;
    opacity: 0;
}

/*
    名前の色
*/
.meta .name {
    color: hsl(22, 100%, 90%);
}

div[data-from='valtam1919'] .meta .name {
    color: hsl(0, 100%, 60%);
}

div[data-from='eai_stream'] .meta .name {
    color: hsl(44, 100%, 62%);
}