.letter-writing {
    padding: 40px 30px;
    margin-right: auto;
    margin-left: auto;
    width: 100%;
    background: #fff;
}

.letter-writing__row {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    margin-right: -15px;
    margin-left: -15px;
}

.letter-writing__form {
    padding-right: 15px;
    padding-left: 15px;
    flex: 0 0 100%;
    max-width: 100%;
}

.letter-writing__form-title {
    font-size: 24px;
}

.letter-writing__form-group {
    margin-bottom: 15px;
}

.letter-writing__form-control {
    padding: 8px;
    width: 100%;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 3px;
}

.letter-writing__letter {
    padding-right: 15px;
    padding-left: 15px;
    flex: 0 0 100%;
    max-width: 100%;
    max-height: 350px;
    overflow: auto;
    font-size: 20px;
}

.letter-writing button {
    padding: 7px 25px;
    letter-spacing: 3px;
    color: #fff;
    text-transform: uppercase;
    border-radius: 3px;
    background-color: #50748a;
    border: 1px solid #50748a;
    -webkit-transition: .3s ease-in-out;
    -o-transition: .3s ease-in-out;
    transition: .3s ease-in-out;
}

.letter-writing button[disabled] {
    background-color: #ccc;
    border-color: #ccc;
}

.letter-writing button:not[disabled]:hover {
    color: #50748a;
    background-color: #fff;
}

.letter-writing-form__check label {
    position: relative;
    padding-left: 25px;
    cursor: pointer;
}

.letter-writing-form__check label:before {
    content: '';
    position: absolute;
    top: 6px;
    left: 0;
    width: 15px;
    height: 15px;
    font-size: 12px;
    line-height: 1.2;
    color: #50748a;
    text-align: center;
    border: 1px solid #ccc;
}

.letter-writing-form__check input {
    display: none;
}

.letter-writing-form__check input:checked + label:before {
    content: '\2713';
    border-color: #50748a;
}

.letter-writing__response.error {
    color: #c02b0a;
}

.letter-writing__response.success {
   color: #51748b;
}

.loader {
    display: none;
}

.loader img {
    width: 30px;
}

/* Responsive */
@media screen and (min-width: 576px) {
    .letter-writing {
        max-width: 540px;
    }
}
@media screen and (min-width: 768px) {
    .letter-writing {
        max-width: 720px;
    }
}

@media screen and (min-width: 992px) {
    .letter-writing {
        padding: 5rem 7rem;
        max-width: 960px;
    }

    .letter-writing__form {
        webkit-box-flex: 0;
        -webkit-flex: 0 0 41.66667%;
        -moz-box-flex: 0;
        -ms-flex: 0 0 41.66667%;
        flex: 0 0 41.66667%;
        max-width: 41.66667%;
    }

    .letter-writing__letter {
        padding-left: 5rem;
        -webkit-box-flex: 0;
        -webkit-flex: 0 0 58.33333%;
        -moz-box-flex: 0;
        -ms-flex: 0 0 58.33333%;
        flex: 0 0 58.33333%;
        max-width: 58.33333%;
    }
}

@media screen and (min-width: 1200px) {
    .letter-writing {
        max-width: 1140px;
    }
}