.main_rss a {
    font-size: 16px;
    color: #4b4b4b;
    line-height: 24px;
    border-top: 1px solid #f0f0f0;
    display: table;
    padding: 19px 15px 12px 2px;
    max-height: 79px;
}
.main_rss a span {
    font-size: 13px;
    color: #a7a7a7;
    line-height: 29px;
    letter-spacing: 0.13px;
    display: table;
    margin-top: 0px;
}
.main_rss a span.source {
    font-size: 13px;
    color: #07b1ff;
    line-height: 16px;
    letter-spacing: 0.13px;
    display: table;
    margin-top: 4px;
}
.main_rss a div {
    color: #4b4b4b;
}

.main_rss a div.description_popup {
    display: none;
}

.popup-window-content .main_rss {
    max-width: 640px;
    padding: 20px 20px;
}

.popup-window-content .main_rss a {
    font-size: 20px;
}

.popup-window-content .main_rss a div.description_popup {
    padding-top: 20px;
    display: table;
    padding-bottom: 20px;
    font-size: 16px;
}

.popup-window-content .main_rss a {
    border-top: none;
}

.popup-window-content .buttongreen_sub {
    text-align: center;
    cursor: pointer;
    width: 250px;
    height: 50px;
    float: right;
    background-color: #1da1f2;
    border-radius: 5px;
    color: #ffffff;
    font-family: "Montserrat";
    font-weight: 500;
    font-size: 16px;
    line-height: 50px;
}

.popup-window-content .buttongray_sub {
    text-align: center;
    cursor: pointer;
    width: 250px;
    height: 50px;
    background-color: white;
    border-radius: 5px;
    color: #ccc;
    border: 2px solid #ccc;
    font-family: "Montserrat";
    font-weight: 500;
    font-size: 16px;
    line-height: 50px;
}

@media (max-width: 425px) {
    .popup-window-content .buttongreen_sub,
    .popup-window-content .buttongray_sub {
        width: 100%;
        float: none;
        margin-bottom: 10px;
    }
}