body {
    margin: 0;
    padding-bottom: 3rem;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.message_form {
    background: rgba(0, 0, 0, 0.15);
    padding: 0.25rem;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    height: 3rem;
    box-sizing: border-box;
    backdrop-filter: blur(10px);
}

.message_form__input {
    border: none;
    padding: 0 1rem;
    flex-grow: 1;
    border-radius: 2rem;
    margin: 0.25rem;
}

.message_form__input:focus {
    outline: none;
}

.message_form>button {
    background: #333;
    border: none;
    padding: 0 1rem;
    margin: 0.25rem;
    border-radius: 3px;
    outline: none;
    color: #fff;
}
.inbox{
    float: left;
}
.incoming__message{
    border: 1px solid red;
}
.outgoing__message{
    border: 1px solid blue;
}