.section.paper {
    position: relative;
}

.section.paper pre {
    white-space: pre-line;
    word-wrap: break-word;
    font-family: 'Arial';
}

.section.paper pre ul {
    padding-left: 35px;
}

.invite {
    position: relative;
}

.invite .huttalk {
    position: relative;
    width: 900px;
    height: 400px;
    background: #fff;
    margin: auto;
    padding: 80px;
    box-shadow: 0px 0px 40px 0px rgba(0,0,0,.2);
    margin-top: 10%;
    overflow: hidden;
}

.huttalk .banner {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: .1;
}

.huttalk *:not(.banner) {
    position: relative;
}

.huttalk h2 {
    padding: 5px;
    width: 100px;
    text-align: center;
    font-size: 12px;
    background: #fff;
    color: #000;
    margin-bottom: 20px;
}

.huttalk h3 {
    font-size: 15px;
    font-weight: normal;
}

.huttalk .header {
    display: flex;
    align-items: center;
    border-bottom: 1px solid #ccc;
    margin-bottom: 20px;
    padding-bottom: 30px;
}

.huttalk .header img {
    flex: 0 0 auto;
    width: 100px;
    height: 100px;
    background: #fff;
    border: 1px dashed #666;
    padding: 5px;
    border-radius: 100px;
}

.huttalk .cont {
    margin-left: 20px;
}

.huttalk .cont * {
    display: block;
    color: #666;
}

.huttalk .cont h4 {
    letter-spacing: .5px;
    font-size: 18px;
    margin-bottom: 10px;
    color: #000;
}

.huttalk .cont span {
    font-size: 12px;
    margin-bottom: 5px;
}

.huttalk .info {
    position: relative;
    display: flex;
    align-items: center;
    margin-top: 10px;
}

.huttalk .info .users {
    flex: 0 0 auto;
    margin-right: 10px;
}

.huttalk .info .users img {
    width: 60px;
    height: 60px;
    border-radius: 100px;
    background: #fff;
    padding: 2px;
    border: 1px solid #ccc;
}

.huttalk .info .users img:not(
    :first-child) {
    margin-left: -20px;
}

.huttalk .info form {
    margin-left: auto;
}

.huttalk .info button {
    width: 120px;
    height: 40px;
    font-size: 12px;
    color: #fff;
    background: #1d9bf0;
    border: none;
    border-radius: 4px;
    transition: 0.5s ease-in-out;
}

.huttalk .info button:hover {
    background: #0b83d3;
}

@media(max-width: 600px) {
    .header-area {
        background: #1d9bf0;
    }
    .invite .huttalk {
        width: 100%;
        height: auto;
        padding: 30px 10px 20px 10px;
        margin-top: 80px;
        margin-bottom: -30px;
    }
    .huttalk h3 {
        font-size: 14px;
    }
    .huttalk .header img {
        width: 90px;
        height: 90px;
    }
    .huttalk .cont h4 {
        font-size: 15px;
        letter-spacing: normal;
    }
    .huttalk .cont span {
        display: none;
    }
    .accordion {
        padding: 0 10px 0 10px;
    }
    .accordion-item button,
    .accordion-item .accordion-body {
        padding-left: 0 !important;
        padding-right: 0 !important;
    }
}