styles.css

body {
    color: #000;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 12px;
    line-height: 1.5em;
    margin: 0;
    padding: 0;
    background-color: rgb(190, 201, 252);

}

h1 {
    color: white;
    background-color: navy;
    padding: 10px;
    text-align: center;
}

h2 {
    color: white;
    background-color: rgb(64, 64, 138);
    padding: 10px;
}

h3 {
    color: #fff;
    background-color: rgb(117, 117, 185);
    padding: 10px;
}

ul {
    color: navy;
}

.barra {
    color: #fff;
    font-size: 1.5em;
    font-weight: bold;
    padding: 0.5em;
}

#sendButton {
    background-color: #4CAF50;
    border: none;
    color: white;
    padding: 16px 16px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 100%;
}

#sendButton:hover {
    background-color: #45a049;
}

table {
    border-collapse: collapse;
    border-color: navy;
    text-align: center;
    color: navy;
    table-layout: fixed;
    width: 100%;
    height: 100%;
}

th, td {
    width: 33%;
}


#dataChannelReceive {
    margin: 4px 2px;
    background-color: #f1f1f1;
    overflow: auto;
    width: 100%;
    height: 100%;
}

#dataChannelSend {    
    margin: 4px 2px;
    background-color: whitesmoke;
    overflow: auto;
}

textarea {
    overflow-y: scroll;
    resize: none;
}

.message-sender {
    background-color: #cdeedd;
    color: navy;
    text-align: right;;
    padding: 5px;
    margin-bottom: 5px;
    border: 1px solid grey;
    border-radius: 5px;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
    margin-right: 1%;

  }
  
  .message-receiver {
    background-color: #cceeff;
    color: navy;
    text-align: left;
    padding: 5px;
    margin-bottom: 5px;
    border: 1px solid grey;
    border-radius: 5px;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
  }

  #chat {
    overflow-y: scroll;
    height: 100%;
}

video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}