body {
    width: 500px;
    margin-inline: auto;
    margin-block: 80px;
}

input,
textarea {
    width: 100%;
}

input[type="radio"],
input[type="checkbox"] {
    width: auto;
}

textarea {
    display: block;
}

label {
    display: block;
    margin-bottom: 4px;
}

div + div {
    margin-top: 12px;
}

.error {
    color: red;
    margin: 0;
}