.wrapper {
    width: 100%;
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

.conteiner {
    max-width: 1200px;
    height: 100%;
    margin: 0 auto;
    position: relative;
}

/* header */
.header {
    width: 100%;
    height: 60px;
    background: #333 repeating-linear-gradient(90deg,
            rgba(30, 15, 140, 0.36), rgba(37, 124, 201, 0.37) 5px,
            rgba(10, 26, 89, 0.38) 5px, rgba(123, 159, 225, 0.37) 10px);
    box-shadow: rgba(0, 0, 0, 0.17) 0px -23px 25px 0px inset, rgba(0, 0, 0, 0.15) 0px -36px 30px 0px inset, rgba(0, 0, 0, 0.1) 0px -79px 40px 0px inset, rgba(0, 0, 0, 0.06) 0px 2px 1px, rgba(0, 0, 0, 0.09) 0px 4px 2px, rgba(0, 0, 0, 0.09) 0px 8px 4px, rgba(0, 0, 0, 0.09) 0px 16px 8px, rgba(0, 0, 0, 0.09) 0px 32px 16px;
}

/* footer */
.footer {
    width: 100%;
    background: #333 repeating-linear-gradient(90deg,
            rgba(30, 15, 140, 0.36), rgba(37, 124, 201, 0.37) 5px,
            rgba(10, 26, 89, 0.38) 5px, rgba(123, 159, 225, 0.37) 10px);
}

/* page */
.main {
    flex: 1 1 auto;
}

.page {
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, #e6e9f0, #eef1f5);
    box-shadow: 0 0 40px rgba(0, 0, 0, .2) inset;
    padding: 20px;
    text-align: center;
}

h1 {
    font-size: 28px;
    font-weight: 700;
    color: #0c2e5e;
    text-align: center;
    padding-top: 20px;
}

.main_title {
    font-size: 20px;
    color: #0c2e5e;
    text-align: center;
    padding-bottom: 20px;
}

.plain_text {
    font-size: 16px;
    font-style: italic;
    color: #000;
    padding: 10px 20px;
    text-align: justify;
    text-indent: 30px;
}

.subtitle_text {
    font-size: 20px;
    font-weight: 700;
    text-align: left;
    color: brown;
    padding: 20px 30px;
}

.roll li {
    list-style-type: lower-latin;
    text-align: justify;
    font-size: 18px;
    font-style: italic;
    margin: 0 50px;
    padding: 7px 20px;
}

.task_text {
    font-size: 20px;
    text-align: left;
    font-weight: 700;
    font-style: italic;
    color: #0c2e5e;
    padding: 20px 30px;
}

/* форма */
.form_conteiner {
    width: 80%;
    margin: 20px auto;
    padding: 20px;
    border: 7px ridge #a5bbd8;
    border-radius: 7px;
    position: relative;
}

.bid_info {
    visibility: hidden;
    font-size: 14px;
    font-style: italic;
    text-align: center;
    margin: 10px;
    padding: 5px 20px;
    border: 2px solid #e6e3df;
    box-shadow: 0px 1px 2px rgba(0, 0, 0, 0.1),
        0px 2px 4px rgba(0, 0, 0, 0.1),
        0px 4px 8px rgba(0, 0, 0, 0.1),
        0px 8px 16px rgba(0, 0, 0, 0.1);
}

.input_conteiner {
    display: flex;
    flex-flow: column;
    align-items: center;
    text-align: center;
}

.bid_name,
.bid_surname,
.bid_email {
    width: 90%;
    height: 40px;
    font-style: italic;
    color: #151515;
    padding-left: 10px;
    margin: 5px;
    border: none;
    background-color: #f7f3ef;
    box-shadow: inset 2px 2px 5px rgba(154, 147, 140, 0.5), 1px 1px 5px rgba(255, 255, 255, 1);
}

.bid_name::placeholder,
.bid_surname::placeholder,
.bid_email::placeholder {
    font-size: 14px;
    padding: 10px 20px;
    font-style: italic;
    color: #151515;
}

.bid_btn_submit {
    width: 40%;
    height: 40px;
    font-size: 18px;
    background-color: #0c2e5e;
    color: #fff;
    cursor: pointer;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3), -23px 0 20px -23px rgba(0, 0, 0, 0.8),
        23px 0 20px -23px rgba(0, 0, 0, 0.8), 0 0 40px rgba(0, 0, 0, 0.1) inset;
}

.bid_btn_submit:hover {
    border: 2px ridge #0c2e5e;
    background-color: #fff;
    color: #0c2e5e;
}

/* табличка отказ оплаты */
.sign_info_conteiner {
    width: 40%;
    background-color: red;
    padding: 20px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3), -23px 0 20px -23px rgba(0, 0, 0, 0.8),
        23px 0 20px -23px rgba(0, 0, 0, 0.8), 0 0 40px rgba(0, 0, 0, 0.1) inset;
}

.not_show {
    display: none;
}

.sign_info_text {
    font-size: 18px;
    font-style: italic;
    text-align: center;
    color: #fff;
}

/* Адаптация */
@media(max-width:1200px) {
    .conteiner {
        max-width: 970px;
    }

    .sign_info_conteiner {
        width: 80%;
    }
}

@media(max-width:992px) {
    .conteiner {
        max-width: 750px;
    }
}

@media(max-width:767px) {
    .conteiner {
        max-width: none;
    }

    .bid_btn_submit {
        width: 90%;
    }
}

@media(max-width:550px) {
    /*до 340px*/

    .page {
        padding: 5px;
    }

    .plain_text {
        font-size: 14px;
    }

    .subtitle_text {
        font-size: 15px;
    }

    .roll li {
        font-size: 14px;
        margin: 0 30px;
        padding: 7px 10px;
    }

    .task_text {
        font-size: 15px;
    }
}