style.css

body {
    font-family: helvetica, arial, sans-serif;
    margin: auto;
    color: lightgrey;
    text-align: center;
    background-color: black;
}

h1 {
    font-style: bold;
    color: lightseagreen;
    text-align: center;
    margin-bottom: 50px;
}


h2 {
    font: bold;
    color: #FFF;
    text-align: center;
    margin-bottom: 50px;
}

video {
    display: block;
    margin-right: auto;
    margin-left: auto;
}

button {
    margin-top: 30px;
}

.vertical-center {
    margin: 0;
    position: absolute;
    top: 50%;
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
}

section {
    opacity: 1;
    transition: opacity 500ms ease-in-out;
    margin: auto;
    width: auto;
}

.wrap {
    display: flex;
    margin-top: 30px;
}

.wrap div {
    flex-grow: 1;
    height: 200px;
    margin: 10px;
    text-align: center;
}

.container {
    height: 200px;
    position: relative;
}

.vertical-center {
    margin-left: 30em;
    position: absolute;
    top: 50%;
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
}

.removed {
    display: none;
}

.invisible {
    opacity: 0.2;
}

.camView {
    position: relative;
    width: 48%;
    margin: 2% 1%;
    cursor: pointer;
}

.camView p {
    position: absolute;
    padding: 5px;
    background-color: rgba(255, 111, 0, 0.85);
    color: #FFF;
    border: 1px dashed rgba(255, 255, 255, 0.7);
    z-index: 2;
    font-size: 12px;

}

.highlighter {
    background: rgba(0, 255, 0, 0.25);
    border: 1px dashed #fff;
    z-index: 1;
    position: absolute;
}