html {
    background: #e6e9e9;
    background-image: linear-gradient(270deg, rgb(230, 233, 233) 0%, rgb(216, 221, 221) 100%);
    -webkit-font-smoothing: antialiased;
}

body {
    background: #fff;
    box-shadow: 0 0 2px rgba(0, 0, 0, 0.06);
    color: #545454;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    margin: 0 auto;
    max-width: 800px;
    padding: 2em 2em 4em;
}

h1, h2, h3, h4, h5, h6 {
    color: #222;
    font-weight: 600;
    line-height: 1.3;
}

h1 {
    text-align: center;
}

h2 {
    margin-top: 1.3em;
}

a {
    color: #0083e8;
}

b, strong {
    font-weight: 600;
}

samp {
    display: none;
}

img {
    background: transparent;
   	padding: 1em 1em 1em 1em;
}

@keyframes colorize {
    0% {
        -webkit-filter: grayscale(100%);
        filter: grayscale(100%);
    }
    100% {
        -webkit-filter: grayscale(0%);
        filter: grayscale(0%);
    }
}
.vertical-menu {
  /*font-size: 16px;*/
  width: 150px; /* Set a width if you like */
}

.vertical-menu a {
  background-color: #eee; /* Grey background color */
  color: black; /* Black text color */
  display: block; /* Make the links appear below each other */
  padding: 3px; /* Add some padding */
  text-decoration: none; /* Remove underline from links */
}

.vertical-menu a:hover {
  background-color: #ccc; /* Dark grey background on mouse-over */
}

.vertical-menu a.active {
  background-color: #4CAF50; /* Add a green color to the "active/current" link */
  color: white;
}