iframe { display:block; border:none;  }
body {
	-webkit-user-select: none;
	-khtml-user-select: none;
	-moz-user-select: none;
	-o-user-select: none;
	user-select: none;
	height: 100%;
	overflow: hidden;
    background-color: black;
}

#preset_dialog {
	position: absolute;
    left: 5px;
	top: 35px;
	visibility: hidden;
}

.column {
    float: left; 
    width: 33.33%;
}
.right {
    float: right;
}
.column_text_left {
    text-align: left;
    padding-left: 6%; 
}
.column_text_middle {
    text-align: center;
}
.column_text_right {
    text-align: right;
    padding-right: 6%;
}

.row:after {
    content: ""; 
    display: table; 
    clear: both;
}


@media screen and (max-width: 400px) {
    .column {
        width: 100%; 
    }
    .column_text_left {
        text-align: center;
        padding-left: 0%;
    }
    .column_text_right {
        text-align: center;
        padding-right: 0%;
    }
}