*,
:after,
:before {
    box-sizing: border-box;
}

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

.main-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background-color: black;
}

h1 {
    font-family: Arial, Helvetica, sans-serif;
    color: white;
    font-size: 24px;
}

p {
    font-family: Arial, Helvetica, sans-serif;
    color: white;
    font-size: 18px;
}

a {
    font-family: Arial, Helvetica, sans-serif;
    color: white;
    font-size: 18px;
}