body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f7f7f7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

main {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

article {
    width: 100%;
    max-width: 500px;
    text-align: center;
    padding: 28px;
    box-sizing: border-box;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.h1-success,
.h1-cancel {
    margin-top: 0;
    margin-bottom: 39px;
}
.h1-success {
    color: #2e7d32;
}

.h1-cancel {
    color: #d32f2f;
}

article p {
    color: #555;
    margin-bottom: 39px;
}

article a {
    display: inline-block;
    padding: 12px 20px;
    background: #1976d2;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
}

article a:hover {
    background: #125ea9;
}

article a:focus {
    outline: 2px solid #125ea9;
    outline-offset: 2px;
}