p {
    font-family: Calibri, Calibri, sans-serif;
    font-size: 16px;
    margin: 10px;
}

a {
    font-family: Calibri, Calibri, sans-serif;
    font-size: 20px;
    margin: 10px;
}

h1 {
    font-family: Calibri, Calibri, sans-serif;
    font-size: 40px;
    margin: 10px;
}

h2 {
    font-family: Calibri, Calibri, sans-serif;
    font-size: 30px;
    margin: 10px;
}

h3 {
    font-family: Calibri, Calibri, sans-serif;
    font-size: 24px;
    margin: 10px;
}

button {
    font-family: Calibri, Calibri, sans-serif;
    font-size: 16px;
    text-align:center;
    display:inline-block;
    cursor:pointer;
    background-color:white;
    border: 2px solid lightsteelblue;
    padding: 5px 20px;
    color:midnightblue;
    transition-duration: .4s;
}
button:hover {
    background-color:lightsteelblue;
    color:white;
}