body{
    margin: 0;
}

#one {
    display: block;
    padding: 20px;
    height: 100vh;
    margin: 0;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    background-color: #002147;
    color: #FFF;
}

h1 {
    margin: 0;
    color: #03aefe;
}
button {
    border: 1px solid #FFF;
    background-color: #FFF;
    border-radius: 5px;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 1.2em;
}

button:hover{
    background-color: #03aefe;
    border-color: #03aefe;;
    color: #FFF;
    transform: scale(100%);
    transition: 0.3s;
}
#two {
    display: none;
    height: 100vh;
    font-family: 'Courier New', Courier, monospace;
    padding: 20px;
    background-color: #0000aa;
    color: #FFF;
}