style.css

@import url(https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css);
html,
body {
    height: 100%;
    width: 100%;
}

input,
iframe {
    margin: 4px;
}

* {
    z-index: 2;
}

#textboxForm {
    position: absolute;
}

#videoFrame {
    z-index: 0;
}

#videoCover {
    position: fixed;
    width: 100%;
    height: 100%;
    z-index: 1;
}

#urlForm {
    max-width: 400px;
}

.coverbox {
    z-index: 1 !important;
}

.fa {
    font-size: 1.25em;
    padding: 0.25em;
    background-color: rgba(0, 0, 0, 0.8);
    border-radius: 2px;
    color: white;
}

.selection-square {
    width: 30px;
    height: 30px;
    border: 5px solid rgba(0, 0, 0, 0.8);
    border-radius: 5px;
    position: absolute;
    z-index: 2;
    /*   background-image: url(http://pre08.deviantart.net/4c4b/th/pre/f/2011/094/d/a/drawing_grid_by_blossomhillstables-d3d70y5.png);
  background-repeat: repeat;
  background-size: 519px 384.5px; */
}

.selection-square:focus,
.selection-square:active {
    outline: none;
    z-index: 3;
}

.selection-square:focus {
    background-color: rgba(0, 255, 0, 0.3);
}

.selection-square:active {
    background-color: rgba(255, 165, 0, 0.3);
}

.taggle {
    border: 1px solid;
}