body {
    width: 35em;
    margin: 0 auto;
    font-family: Tahoma, Verdana, Arial, sans-serif;
}
.c-form {
    max-width: 1000px;
    margin: 0 auto;
}
.c-form__item {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-evenly;
    margin-bottom: 20px;
}
.c-form__label,
.c-form__input {
    padding: 10px;
}
.c-form__label {
    width: 90%;
}
.c-form__input {
    width: 90%;
    font-size: 16px;
    border: solid 1px #ccc;
    border-radius: 4px;
}
.c-form__input:focus-visible {
    outline: green auto 1px;
}
.c-form__required {
    color: red;
}
textarea.c-form__input {
    height: 160px;
}
.c-form__submit {
    text-align: center;
}
.c-form__submit button {
    font-size: 16px;
    /*font-weight: bold;*/
    color: #fff;
    background-color: black;
    border: solid 1px black;
    border-radius: 4px;
    padding: 5px 32px;
    transition: 0.4s;
    cursor: pointer;
}
.c-form__submit button:hover {
    color: black;
    background-color: transparent;
}

@media (min-width: 640px) {
.c-form__item {
    flex-wrap: nowrap;
}
.c-form__label {
    text-align: right;
    width: 15%;
}
.c-form__input {
    width: 75%;
}