body{
font-family:Arial;
background:#0b0b0b;
color:white;
margin:0;
}

.layout{
display:flex;
height:100vh;
}

.sidebar{
width:250px;
background:#111;
overflow:auto;
padding:10px;
}

.chat{
flex:1;
padding:20px;
}

.in{
background:#222;
padding:10px;
margin:5px;
border-radius:5px;
}

.out{
background:#7b0f1a;
padding:10px;
margin:5px;
border-radius:5px;
text-align:right;
}