/* HTML elements base style */
table {
    border-collapse: collapse;
}
td, th {
    border-style: solid;
    border-width: 1px;
    border-color: #DDDDDD;
    padding: 5px;
}
p, ul, table {
    margin-left: 10px;
}
/* Base layout */
html, body {
    height: 100%;
    width: 100%;
    padding: 0;
    margin: 0;
}
body {
    grid-template-rows: 1;
    grid-template-columns: auto 800px auto;
    display: grid;
    grid-column-gap: 50px;
    font-family: sans-serif;
}
.col {
    height: 100%;
}
#content {
    padding-top: 10px;
    padding-bottom: 10px;
}
@media(max-width: 1400px) {
    body {
        grid-template-columns: auto 800px;
    }
    .ad_container:last-child {
        display: none;
    }
}
@media(max-width: 1100px) {
    body {
        grid-template-columns: auto;
    }
    .ad_container {
        display: none;
    }
}
/* Layout elements */
.ad {
    width: calc(100% - 40px);
    max-width: 400px;
    padding: 10px;
    padding-bottom: calc(100% - 40px);
    margin: 10px;
    border-style: solid;
    border-color: #DDDDDD;
    border-width: 1px;
    border-radius: 5px;
    box-shadow: 5px 5px #EEEEEE;
    display: none;
}