* {
box-sizing: border-box;
margin: 0;
padding: 0;
line-height: 1.5;
font-family: arial, sans-serif;
font-size: 14px;
word-wrap: break-word;
word-break: break-word;
}

#wrapper {
padding: 30px;
width: 100%;
max-width: 800px;
margin: auto;
}

h1, h2, h3, h4 {
padding: 5px 0;
}

p {
padding-bottom: 10px;
}

button {
font-size: 14px;
border: none;
background: black;
color: white;
padding: 10px 15px;
border-radius: 4px;
margin-bottom: 30px;
cursor: pointer;
}

ul {
margin-left: 12px;
padding: 5px 0 15px 0;
}

ol {
margin-left: 15px;
padding: 5px 0 15px 0;
}

li {
padding: 0 0 10px 0;	
}

button:hover {
background: gray;
}

footer {
margin-top: 30px;
}