html, body {
     font-family: Arial, sans-serif;
     margin: 0px;
     padding: 0px;
     height: 100%;
     width: 100%;
     background-color: #FFF;
     box-sizing: border-box;
}

h2 {
    box-sizing: border-box;
    width: 100%;
    zzzbackground-color: #EEE;
    padding: 20px 20px 0px 20px;
    margin: 20px 0px 0px 0px;
}

a {
    color: #666;
    font-style: normal;
    font-weight: bold;
}

p {
    margin: 20px 0px;
}

.container {
    display: flex;
    margin: 0px;
    min-height: 100%;
    width: 100;
    flex-direction: row;
}

.main {
    padding: 0px;
    background-color: #FFF;
    flex-grow: 1;
    width: calc(100% - 280px);
    box-shadow: -5px 0px 5px 1px #CCC;
}

.header {
    color: #FFF;
    background: #F40;
    padding: 20px;
}

.ad_space {
    width: 250px;
    flex: 0 0 250px;
    padding: 5px;
    min-height: 300px;
}

@media only screen and (max-width: 850px) {
    .container {
        flex-direction: column-reverse;
    }
    .ad_space {
        width: 100%;
        flex: 0 0 100%;
    }
    .main {
        width: 100%;
    }
}

h1 {
    margin: 0px;
    padding-top: 20px;
}

.item {
    box-sizing: border-box;
    width: 100%;
    padding: 10px 20px;
}

.gallery {
    white-space: nowrap;
    overflow-x: auto;
}

.gallery img {
    height: 150px;
}

.download {
    color: #666;
    font-style: italic;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
    max-width: 100%;
    max-height: 100%;
    background-color: rgba(0,0,0,0.75);
    align-items: center;
    justify-content: center;
}

.full_size_image {
    max-width: 95%;
    max-height: 95%;
}