.preloader__form {
    width: 100%;
    text-align: center;
}

.preloader__form {
    display: none;
}

.preloader__form.active {
    display: block;
}

.btn-main {
    display: inline-block;
    width: auto;
    height: 46px;
    line-height: 44px;
    color: #ffffff;
    background: #181818;
    font-size: 16px;
    font-weight: 600;
    outline: none;
    padding: 0 33px;
    border-radius: 23px;
    transition: all 0.3s;
    margin-top: 8px;
    margin-bottom: 28px;
    border: 2px solid rgba(255,255,255,0.35);
}

.btn-blue {
    border: 2px solid #1378F5;
}