*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

hr { display: block; height: 1px; border: 0; border-top: 1px solid #ccc; margin: 1em 0; padding: 0; }
nav ul { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-weight: normal; }
strong, th { font-weight: bold; }
textarea { overflow: auto; }
label, input[type=button], input[type=submit], button { cursor: pointer; }
button { width: auto; overflow: visible; }