iframe.css

body.mrge-iframe-body {
    /*white-space: pre-line; *//* CSS 3.0 */
    word-wrap: break-word; /* IE 5+ */
    padding: 10px;
}

* {
    padding: 0;
    margin: 0;
}

/* Blocks */

.mrge-content-block {
    position: relative;
}

.mrge-content-block.mrge-left-side {
    float: left;
    clear: left;
    margin: 5px 15px 5px 0;
}

.mrge-content-block img {
    display: block;
    border: none;
    outline: none;
}

.mrge-content-block-container {
    display: none;
}

.mrge-content-block-move-action {
    height: 30px;
    width: 40px;
    position: absolute;
    cursor: pointer;
    font-size: 34px;
    color: #999999;
    text-align: center;
    line-height: 30px;
    z-index: 9;
}

.mrge-content-block-move-action::-moz-selection {
    user-select: none;
}

.mrge-content-block-top {
    top:0;
    left: 50%;
    margin-left: -20px;
}

.mrge-content-block-bottom {
    bottom:0;
    left: 50%;
    margin-left: -20px;
}

.mrge-content-block-close {
    top:0;
    right: 0;
    height: 30px;
    width: 30px;
    position: absolute;
    cursor: pointer;
    font-size: 50px;
    color: #999999;
    text-align: center;
    line-height: 32px;
}

.mrge-content-block-close::-moz-selection {
    user-select: none;
}

h2 {
    margin: 10px 0 10px 0;
}

h3 {
    margin: 5px 0 5px 0;
}

ul, ol {
    list-style-position: inside;
}