.form {
    max-width: 500px;
    margin: 0 auto;
    overflow: auto;
}

.form textarea,
.form input {
    width: 100%;
    border-radius: .5rem;
    padding: .5rem;
    border: none;
    box-sizing: border-box;
    font-size: 1rem;
    resize: none;
}

.form button {
    float: right;
    margin-top: 1rem;
    padding: .3rem .5rem;
    cursor: pointer;
    border: .1rem solid var(--content-color);
    border-radius: .5rem;
    background-color: transparent;
    font-size: 1rem;
}

.form .error {
    color: #f00;
}