*[class^='iconoir-']::before,
*[class*=' iconoir-']::before {
content: ' ';
display: block;
background: currentColor;
mask-size: cover;
-webkit-mask-size: cover;
width: 1em;
height: 1em;
}
*[class^='iconoir-'],
*[class*=' iconoir-'] {
display: inline-block;
padding: 0 0.3em 0 0;
}
.iconoir-arrow-up::before{mask-image:url('data:image/svg+xml;charset=utf-8,');}
.iconoir-folder::before{mask-image:url('data:image/svg+xml;charset=utf-8,');}
.iconoir-tools::before{mask-image:url('data:image/svg+xml;charset=utf-8,');}
a {
text-decoration: none;
color: #3498db;
}
a:hover {
color: #2ecc71;
}
a:visited {
color: #9b59b6;
}
h1 {
font-size: 2rem;
margin: 0;
padding: 0.4rem 0;
}
h1, h2, h3 {
letter-spacing: 0.03em;
}