* { 
    font-family: 'Roboto', sans-serif; /* Seclects the font to be used from externally linked Google fonts CSS sheet*/
    box-sizing: border-box;
}

html, body {
    background-color: white; /*sets the background for the whole document*/
    margin: 0;
    line-height: 1.5;
    height: 85%;
    margin: 0;
    padding: 0;
}

div.header{
    background-color: rgba(45,45,45,0.98); /*header background color*/
    color: white; /* Changes the color of the text in the header*/
    font-size: 2.7em; /* Changes the size of the text in the header*/
    text-align: center; /*centers header text*/
    position: sticky; /* Keeps the header at the top even while scrolling*/
    top: 0; /*positions header at the top of the page*/
    z-index:3; /* Keeps the header from being hidden behind other elements while scrolling*/
    box-shadow: 5px 5px 15px rgba(0, 0, 0, 0.74); /*Adds a shadow to the element*/
    font-weight: 300;
}

div.content {
    padding: 30px; 
    background-color: rgb(218, 218, 218);
    box-shadow: 5px 5px 10px rgba(48, 48, 48, 0.479);
    margin:30px;
}

div.column{
    float: left;
    width: 50%;
    padding-top:0;
    padding-right: 30px; 
    /* margin-right: 10px; */
}

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

#drop_zone{
    border: 2px dashed black;
    width: 100%;
    height: 100px;
    background: rgba(0, 0, 0, 0.308);
    margin-top: 30px;
}

/******************************************************************************************************
I learned this method of making an iFrame responsive from https://www.youtube.com/watch?v=X4t0JxiBeO0 */

div.responsive{ 
    width: 100%;
    height: 0;
    padding-bottom: 56.25%;
    position: relative;
    box-shadow: 3px 3px 15px rgba(0, 0, 0, 0.479); /*Adds a shadow to the element*/
}

div.responsive iframe {
    position:absolute;
    width: 100%;
    height: 100%;
    border: none;
   }

/******************************************************************/

@media screen and (max-width: 950px) { /*Changes the following attributes when the width of the window is less than 950 pixels*/
    div.column{
        float:none;
        width: 100%;
    }
}

@media only screen and (orientation:portrait) and (-webkit-min-device-pixel-ratio: 2) { /*Applies this layout to high DPI devices that are in portrait orientation (Usually mobile devices)*/    
    html,
    body {
       zoom: 120%; /*zoom makes everything big enough high dpi displays*/
    }
    
    div.column{
        float:none;
        width: 100%;
    }
}