.trafficlight {
    background: #222;
    background-image: linear-gradient(transparent, #111);
    width: 75px;
    height: 200px;
    border-radius: 10px;
    position: relative;
    border: solid 5px #333;
}

.red {
    background: #d00000;
    background-image: radial-gradient(brown, transparent);
    background-size: 5px 5px; 
    width: 50px;
    height: 50px;
    border-radius: 50%;
    position: absolute;
    top: 10px;
    left: 7.5px;
    border: dotted 2px #d00000;
    box-shadow: 
        0 0 20px #111 inset,
        0 0 10px #d00000;
}

.yellow {
    background: #c3c300;
    background-image: radial-gradient(orange, transparent);
    background-size: 5px 5px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: dotted 2px #c3c300;
    position: absolute;
    top: 70px;
    left: 7.5px;
    box-shadow: 
        0 0 20px #111 inset,
        0 0 10px #c3c300;
    opacity: .1;
}

.green {
    background: green;
    background-image: radial-gradient(#00ad00, transparent);
    background-size: 5px 5px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: dotted 2px #00ad00;
    position: absolute;
    top: 130px;
    left: 7.5px;
    box-shadow: 
        0 0 20px #111 inset,
        0 0 10px #00ad00;
    opacity: .1;
}

.browser-security-box {
    width: 360px;
    margin: auto;
}

.browser-security-box h3 {
    font-size: 16px;
    margin-top: 5px;
    margin-bottom: 2.5px;
}

.browser-security-box p {
    font-size: 12px;
    margin: 1px;
}