/* 以下、Form要素 */
form {
    width: 100%;
}

input {
    padding: 5px;
    border-radius: 5px;
    border: 1px solid #555;
}

input[type="text"], input[type="password"], input[type="email"], input[type="number"] {
    width: 100%;
}

select {
    padding: 5px;
    border-radius: 5px;
    border: 1px solid #555;
}

input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
}

.form-group {
    width: clamp(20rem, 50%, 40rem);
    margin-left: auto;
    margin-right: auto;
}

.input-group {
    display: flex;
    flex-direction: column;
}