:root {
    --primary-color: #141E30;
}

* {
    box-sizing: border-box;
}

html {
    font-family: "Open Sans", sans-serif;
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    line-height: 1.3;
}

section {
    margin: 1rem;
}

h2 {
    margin-bottom: 0.5rem;
    font-size: 2rem;
    font-weight: bold;
    text-align: center;
}

a {
    text-decoration: none;
    color: var(--primary-color);
}

button {
    border: none;
    border-radius: 0.25rem;
    background-color: var(--primary-color);
    color: #fff;
    cursor: pointer;
}

ol {
    list-style: decimal;
    list-style-position: inside;
}

a:hover {
    text-decoration: underline;
}

.expand-code-button {
    width: 100%;    
    padding: 0.75rem;    
}

.code {
    padding: 0.5rem;
    border: 2px solid black;
    border-radius: 0.25rem;
    display: none;
}

.close-code-button {
    float: right;
    width: 35px;
    height: 35px;
    font-size: 1.25rem;
}

.code pre {
    margin-top: 2.25rem;
}