html {
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    display: inline-block;
    text-align: center;
}
h1 {
    font-size: 1.8rem;
    color: white;
}
body {
    margin: 0;
}
.topnav {
    overflow: hidden;
    background-color: #393E46;
    color: white;
    font-size: 1rem;
    padding: 10px;
}
.content {
    padding: 20px;
}
.card-grid {
    max-width: 800px;
    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;
    color: #034078
}
.state {
    color:#6D9886;
}
button {
    background-color: #049faa;
    color: white;
    padding: 14px 20px;
    margin: 8px 0;
    border: none;
    cursor: pointer;
    border-radius: 4px;
}
.button-on {
    background-color:#034078;
}
.button-on:hover {
    background-color: #022546;
}
.button-off {
    background-color:#858585;
}
.button-off:hover {
    background-color: #252524;
}
.login-message{
    padding: 16px;
    width: 350px;
    margin: 0 auto;
}