html, body {
    padding: 0;
    margin: 0;
    width: 100vw;
    height: 100vh;

    -webkit-font-smoothing: antialiased;
    -moz-font-smoothing: grayscale;
    font-family: Open Sans, sans-serif;
	background-color: white;


}

* {
    box-sizing: border-box;
}
.top {
    display: flex;
    flex-direction: column;

	width: 60%;
	margin:auto;
}
.container {
    display: flex;
    flex-direction: column;
    height: 90%;
	width: 80%;
	margin:auto;
}

.iframe-container {
    position: relative;
    width: 100%;
    flex: 1;
    display: flex;
}

.iframe-container > iframe {
    border: 0;
    width: 100%;
    flex: 1;
}

.explainer {
    height: 120px;
    padding: 15px 15px 0 15px;
    background-color: #E2E2E2;
    overflow: auto;
}

.controls {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    flex-shrink: 0;
    height: 80px;
    padding: 15px 0 0 15px;
    background-color: #F2F2F2;
    
    overflow: auto;
}

.controls > * {
    margin-right: 15px;
    margin-bottom: 15px;
}