body {font-family: sans-serif; background: #ecf0f1; display: flex; align-items: center; height: 90vh; padding: 0; margin: 0;}
.notice {
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    position: relative;
    margin-bottom: 1.5rem;
    width: 100%;
    background: #FFF;
    padding: 50px 10px;
    max-width: 600px;
    margin: auto;
    text-align: center;
    border-radius: 4px;
    font-weight: bold;
}