.input__textarea {
    font-size: 1.2em;
    border: 1px solid #222;
    padding: 5px 10px;
    vertical-align: bottom;
    background: #222;
    color: #fff;
    font-family: var(--font-monospace);
    border-radius: 2px;
    box-shadow: inset 0 0 4px #111;
    transition: border-color .2s;
}
.input__textarea:focus { border-color: var(--accent-colour); }