style.css

p.caption {
  color: #777;
  margin-top: 10px;
}
p code {
  white-space: inherit;
}
pre {
  word-break: normal;
  word-wrap: normal;
}
pre code {
  white-space: inherit;
}

img + em {
  color: #aaa;
}

caption {
  color: #aaa;
}

.center-img {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
}

.center-text {
  text-align: center;
}

.active-banner {
  opacity: 1.0;
  filter: alpha(opacity=100); /* For IE8 and earlier */
}

.active-banner:hover {
  opacity: 0.5;
  filter: alpha(opacity=70); /* For IE8 and earlier */
}

.footer-logo {
  width: 87px;
  height: auto;
}

.github-logo {
  width: 32px;
  height: auto;
}

.logo-404 {
  width: 70%;
  height: auto;
  margin-top: 25vh;
}

.info {
  width: 70%;
  height: auto;
  margin-top: 5vh;
  font-family: "Consolas", 'sans-serif';
  font-size: 1.5em;
  color: #58585A;
}

/* scroll-top button */

#scroll-top {
    position: fixed;
    bottom: 40px;
    right: 7%;
    background: rgb(0, 0, 0);
    background: rgba(0, 0, 0, 0.17);
    width: 50px;
    height: 50px;
    display: block;
    text-decoration: none;
    -webkit-border-radius: 35px;
    -moz-border-radius: 35px;
    border-radius: 35px;
    -webkit-transition: all 0.3s linear;
    -moz-transition: all 0.3s ease;
    -ms-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
}
#scroll-top i {
    color: #fff;
    margin: 0;
    position: relative;
    left: 0px;
    top: 13px;
    font-size: 19px;
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -ms-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
}
#scroll-top:hover {
    background: rgba(0, 0, 0, 0.7);
}
#scroll-top:hover i {
    color: #fff;
    top: 5px;
}