* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    margin-top: 50px;
}

.external {
    text-align: center;
    width: 700px;
    margin: 0 auto;
}

.external p {
    margin: 20px 0px;
}

.external a {
    padding: 10px 20px;
    background-color: red;
    color: white;
    text-decoration: none;
    margin: 50px 30px;
}