Transform only the border CSS - css

Question

I'm writing a code for the chat of my stream, but i got some problems... i want to rotate only the border of the chat box without move the text or the background. how can i do this? i have already read some post but did not solve my problem. i want to do something like that chat.
i use the StreamLabs.
English is not my mother tongue; please excuse any errors on my part.
I'm a beginner at the front end and these issues are taking away my peace.
#import url(https://fonts.googleapis.com/css?family=Open+Sans:600,700);
body {
background: $background_color;
color: $text_color;
}
html, body {
height: 600%;
overflow: hidden;
transform: translate(0px, -10px);
}
#log {
font: 90;
font-family: 'Montserrat', sans-serif;
position: absolute;
bottom: 0;
left: 0;
width: 60%;
box-sizing: border-box;
overflow: hidden;
padding: 10px 16px;
padding-top: 100px;
}
#log>div {
margin-bottom: 45px;
background: rgba(255, 255, 255, 0.1);
padding: 5px 10px 10px;
animation: fadeInDown .3s ease forwards, fadeOut 0.5s ease {message_hide_delay} forwards;
-webkit-animation: fadeInDown .3s ease forwards, fadeOut 0.5s ease {message_hide_delay} forwards;
border-radius: 8px;
}
#log>div.deleted {
visibility: hidden;
}
.meta {
display: table;
line-height: em;
transform: translate(-20px,-30px);
border-radius: 0px 05px 05px 05px;
border: 10px solid #ffd600;
background: #ffd600;
margin-bottom: -22px;
font-weight: 800;
}
.message {
word-wrap: break-word;
display: block;
padding-left: 6px;
line-height: em;
color:white;]
}
.name {
color: Black;
font-size: em;
text-transform: initial;
font-weight: 600;
}
.colon {
display: none;
}
.badge {
float: left;
padding-left: 2px;
padding-right: 7px;
padding-top: 2px;
height: 0.8em;
}
#log .emote {
background-repeat: no-repeat;
background-position: center;
padding: 0.1em;
background-size: contain;
}
#log .emote img {
display: inline-block;
height: 1em;
opacity: 0;
vertical-align: top;
}
<!-- item will be appened to this layout -->
<div id="log" class="sl__chat__layout">
</div>
<!-- chat item -->
<link href="https://fonts.googleapis.com/css?family=Montserrat" rel="stylesheet">
<link href="https://fonts.googleapis.com/css?family=Merriweather" rel="stylesheet">
<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>

Answer 1

You can add a new element to your html and style it to look like that border, or style a pseudo element like ::before or ::after to give you that look.
.tilted-border {
margin: 10px;
background: purple;
border-radius: 10px;
width: 200px;
height: 100px;
position: relative;
padding: 0;
}
.tilted-border:after {
content: '';
display: block;
position: absolute;
top: -5px;
left: -5px;
width: 100%;
height: 100%;
border: 5px solid red;
border-radius: 10px;
transform: rotate( 5deg);
pointer-events: none;
}
<div class="tilted-border"></div>

Answer 2

What you're trying to do is not possible. You cannot move the border of a div independently of the div and its content.
What you'll need to do is create bother div within the first div. Set the container div to position: relative and then absolutely position the new inner div to the edges of the container like so: position: absolute; top: 0; bottom: 0; left: 0; right: 0;. Then you can animate the border of the inner div while the content still sits within the container div free of the transform.