html {
    font-family: Arial, Helvetica, sans-serif; 
    text-align: center;
}
h1 {
    font-size: 1.8rem; 
    color: white;
}
.topnav { 
    overflow: hidden; 
    background-color: #0A1128;
}
body {  
    margin: 0;
}
.content { 
    padding: 50px;
}
.card-grid { 
    max-width: 600px; 
    margin: 0 auto; 
    display: grid; 
    gap: 2rem; 
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}
.card { 
    background-color: white; 
    box-shadow: 2px 2px 12px 1px rgba(140,140,140,.5);
}
.card-title { 
    font-size: 1.2rem;
    font-weight: bold;
    color: #034078
}
.state {
    font-size: 1.2rem;
    color:#1282A2;
}
.switch {
    position: relative; 
    display: inline-block; 
    width: 120px; 
    height: 68px
} 
.switch input {
    display: none
}
.slider {
    position: absolute; 
    top: 0; left: 0; right: 0; bottom: 0; 
    background-color: #ccc; 
    border-radius: 50px
}
.slider:before {
    position: absolute; 
    content: ""; 
    height: 52px; 
    width: 52px; 
    left: 8px; 
    bottom: 8px; 
    background-color: #fff; 
    -webkit-transition: .4s; 
    transition: .4s;
    border-radius: 50px;
}
input:checked+.slider {
    background-color: #b30000;
}
input:checked+.slider:before {
    -webkit-transform: translateX(52px);
    -ms-transform: translateX(52px); 
    transform: translateX(52px);
}