body {
    font-family: Arial, sans-serif;
    background: #f2f8fa;
    margin: 0; padding: 0;
}
.header {
    background: #16c7c7;
    color: white;
    padding: 12px 24px;
}
.title {
    font-size: 2em;
    font-weight: bold;
    margin-left: 20px;
    vertical-align: middle;
}
.main {
    margin: 40px auto;
    width: 100%;
    max-width: 600px;
    background: white;
    border-radius: 12px;
    padding: 32px;
    box-shadow: 0 4px 18px #bbb5;
}
.button {
    display: inline-block;
    background: #16c7c7;
    color: white;
    text-decoration: none;
    padding: 15px 32px;
    border-radius: 6px;
    font-size: 1.2em;
    margin: 20px 10px 0 0;
    transition: background 0.2s;
}
.button:hover {
    background: #15b0b0;
}