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spotlight {
position: fixed;
top: -1px;
bottom: -1px;
width: 100%;
z-index: 99999;
color: #fff;
background-color: #000;
opacity: 0;
overflow: hidden;
-webkit-user-select: none;
-ms-user-select: none;
user-select: none;
transition: opacity .2s ease-out;
font-family: Arial, sans-serif;
font-size: 16px;
font-weight: 400;
}

@keyframes pulsate{
0%, to{
opacity:1
}
50%{
opacity:.2
}
}

#spotlight.show, #spotlight.white{
animation: pulse .8s infinite ease-in-out;
align-items: center;
}

#spotlight.white{
color: #212529;
}