:root {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 30px;
}

#app>div {
    background-color: rgb(92, 198, 231);
    display: inline-block;
    width: 400px;
    margin: 1rem;
    border: 1px solid black;
}

#app>div>a {
    padding: 1rem;
    display: block;
    width: 100%;
    height: 100%;
    text-align: center;
    text-decoration: none;
    color: black;

}

#app>div>a:visited {
    color: black;
}

#app>div>a:hover {
    color: dimgray
}


#app {
    display: block;
}