* {
    padding:0;
    margin: 0;
    box-sizing: border-box;
}
body {
    background-color: #ffffff;
    height: 80vh;
}
ul li {
    margin: 0;
    list-style-type: none ;
}

ul#chat {
    height: calc(100% - 50px);
    max-height: calc(100% - 0px);
    display: flex;
    flex-direction: column;
    width: 100%;
    overflow-y: scroll;
}
ul#chat li.system {
    width: 100%;
    color: red;
    text-align: center;
}
ul#chat li.msg {
    width: 100%;
    display: flex;
    flex-direction: row;
    text-align: right;
    padding: 1em 0;

}
ul#chat li.msg span {
    font-size: 1rem;
    display: inline-block;
    padding: 0 10px;
    background-color:#03ecfc;
    padding: 1rem;
}
ul#chat li.msg span:last-of-type {
    border-top-right-radius: 30px;
    border-bottom-right-radius: 30px;
}
ul#chat li.msg.me span:last-of-type {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    border-top-left-radius: 30px;
    border-bottom-left-radius: 30px;
}
ul#chat li.msg.me {
    flex-direction: row-reverse;
    text-align: left;
}
ul#chat li.msg.me span {
    background-color:#03fca9;
}
form {
    height: 50px;
    display: flex;
    flex-direction: row;
}
form input[type="text"] {
    width: 80%;
}

form input[type="submit"] {
    width: 20%;
}