:root {
    --primary-color: #EE1F3B;
    --secondary-color: #e5e5f7;
}

body, * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
    color: #000;
    text-align: center;
}

header {
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 10px;
}

header img {
    height: 8rem;
}

header h1 {
    margin: 1.5rem 0 1rem 0;
}

header a {
    color: var(--primary-color);
}

.bg {
    top: 0;
    left: 0;
    position: absolute;
    z-index: -1;
    width: 100%;
    height: 100vh;
    background-color: var(--secondary-color);
    opacity: 0.05;
    background: radial-gradient(circle, transparent 20%, var(--secondary-color) 20%, var(--secondary-color) 80%, transparent 80%, transparent), radial-gradient(circle, transparent 20%, var(--secondary-color) 20%, var(--secondary-color) 80%, transparent 80%, transparent) 25px 25px, linear-gradient(var(--primary-color) 2px, transparent 2px) 0 -1px, linear-gradient(90deg, var(--primary-color) 2px, var(--secondary-color) 2px) -1px 0;
    background-size: 50px 50px, 50px 50px, 25px 25px, 25px 25px;
}