body {
    margin: 0;
}

a {
  text-decoration: none;
  color: black;
}

img {
    width: 100%;
}

table {
    border-collapse: collapse;
}

/* Firefox not display the ugly dotted focus outlines on links */
button::-moz-focus-inner {
    border: 0;
}

a:focus { 
    outline: none; 
}