body {
    color: #444;
    font: 400 calc(14px + 2 * ((100vw - 320px) / (1920 - 320))) / 1.5 'Helvetica Neue', Arial, 'Liberation Sans', FreeSans, sans-serif;
    background:#ececec;
    padding: 100px 0;
}

h1 {
    font-size: calc(26px + 10 * ((100vw - 320px) / (1920 - 320)));
}

.container {
    width: 100%;
    padding: 0 25px;
    margin: 0 auto;
    box-sizing: border-box;
}

@media screen and (min-width: 576px) {
    .container {
        max-width: 540px;
        margin: 0 auto;
    }
}

@media screen and (min-width: 768px) {
    .container {
        max-width: 720px;
    }
}

@media screen and (min-width: 992px) {
    .container {
        max-width: 960px;
    }
}

@media screen and (min-width: 1200px) {
    .container {
        max-width: 1200px;
        padding: 0 30px;
    }
}

@media screen and (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }
}

.title {
    color: #000;
    text-align: center;
    margin-top: 0;
    margin-bottom: 30px;
}

.btn {
    height: 50px;
    line-height: 50px;
    font-size: 1.2rem;
    background-color: #ea260c;
    color: #fff;
    border: none;
    box-sizing: border-box;
    padding: 0 30px;
}
.btn:hover {
    background-color: #f3351c;
    cursor: pointer;
}

.form__section {
    background-color: #fff;
    border: 1px solid #555;
    padding: 25px;
}
.form__section + .form__section {
    margin-top: 30px;
}
.form__title {
    color: #000;
    font-size: calc(18px + 6 * ((100vw - 320px) / (1920 - 320)));
    font-weight: 600;
    margin: 0;
    /* margin-bottom: 15px; */
}
.form__control {
    margin: 0;
}
.form__control + .form__control {
    margin-top: 15px;
}
.form__label {
    display: block;
    font-size: calc(14px + 2 * ((100vw - 320px) / (1920 - 320)));
    box-sizing: border-box;
    margin-bottom: 10px;
}
.form__input {
    width: 100%;
    font-size: calc(14px + 2 * ((100vw - 320px) / (1920 - 320)));
    border: 1px solid #999;
    color: #444;
    border-radius: 0;
    background-color: #fff;
    box-sizing: border-box;
    padding: 8px 12px;
}
.form__input:focus {
    border-color: #555;
    border-radius: 0;
    outline: none;
}
.form__input::placeholder {
    font-size: calc(14px + 2 * ((100vw - 320px) / (1920 - 320)));
    color: #999;
}
.form__btn-wrapper {
    text-align: center;
    margin-top: 35px;
}

@media screen and (min-width: 768px) {
    .wrapper {
        background-color: #fff;
        box-shadow: 0px 0px 15px 0px rgba(0, 0, 0, 0.1);
        padding: 40px;
    }
    .title {
        margin-bottom: 40px;
    }
    .form__section {
        position: relative;
        background-color: transparent;
    }
    .form__section + .form__section {
        margin-top: 40px;
    }
    .form__list {
        padding-top: 10px;
    }
    .form__control {
        display: flex;
        align-items: center;
    }
    .form__title {
        position: absolute;
        top: 0;
        transform: translateY(-50%);
        background-color: #fff;
        padding: 0 10px;
        margin-left: -10px;
    }
    .form__label {
        width: 40%;
        margin-right: 25px;
        margin-bottom: 0;
    }
    /* .form__list .form__label {
        padding-left: 20px;
    } */
    .form__input {
        width: auto;
        flex-grow: 1;
    }
    .form__btn-wrapper {
        text-align: right;
    }
}

@media screen and (min-width: 992px) {
    .wrapper {
        padding: 50px;
    }
    .form__section {
        padding: 50px;
    }
    .form__section + .form__section {
        margin-top: 45px;
    }
    /* .form__list .form__label {
        padding-left: 35px;
    } */
}