style.css

body{
    background-color: black;
    color: white;
    
}

table, th, td {
    border-collapse: collapse;
    border: 1px solid white;
    padding: 5px;
  }

a:visited {
    color: white;
  }

.footnote{
    width: 350px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.imgOverlay{
    position: relative;
    background-image: url("HansonBLockDiagram_v3.png");
    width: 1300px;
    height: 1530px;
    margin-left: auto;
    margin-right: auto;
}

input{
    display: block;
    
    padding: .375rem .75rem;
    font-size: 1rem;
    line-height: 1.5;
    color: #495057;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid #ced4da;
    border-radius: .25rem;
}

button{
    display: inline-block;
    font-weight: 400;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    user-select: none;
    border: 1px solid transparent;
    padding: .25rem .75rem;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: .25rem;    
}

label {
    margin: 10px;
    display: block;
}

.highlight{
    margin-left: -25px;
    margin-top: -25px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    position: absolute;
    background-color: rgb(250, 98, 98);
    opacity: 0.5;
}

#lines{
    top: 500px;
    left: 410px;
    position: absolute;
}

.lineFound{
  display: block;
  margin-top: 10px;    
}

.lineNotFound{
    display: block;
    margin-top: 5px;
    color: red;
}

.busEnable{
    position: absolute;
    font-size: 25px;
    color: white;
    background-color: midnightblue;
    border-radius: 50%;    
}