*{
    outline: none;
}
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body{
    overflow: hidden;
}

.container {
    display: flex;
    height: 100%;
}

.nav-button-container{
    
  text-align: center;
}

.nav-button{
    -webkit-appearance: button;
    -moz-appearance: button;
    appearance: button;

    text-decoration: none;
    color: initial;
    font-size: 25px;
    border-radius: 10px;
    padding: 15px;
    background-color: whitesmoke;
    box-shadow: 0 8px 8px 0 rgba(0,0,0,0.3);
}

.nav-button:active{
    background-color: lightslategray;
}

.centered {
    text-align: center;
}