body {
  font: 16px/1.4 "Helvetica Neue", sans-serif;
  color: #d7d7d7;
  background-color: #111111;
  background-image: url("bg_main.png");
}

nav {
  display: flex;
  left: 0;
  top: 0;
  width: 100%;
  height: 48px;
  position: fixed;
  display: flex;
  justify-content: center;
  background-color: #01335c;
  background-image: url("bg_top.png");
}

.logo img {
  width: 275px;
  margin-top: -12px;
  margin-left: -16px;
}

nav a,
nav a:active,
nav a:visited {
  padding: 14px 16px;
  font-size: 17px;
  color: #f2f2f2;
  text-decoration: none;
  font-weight: bold;
}

nav a:hover {
  color: #c0c0c0;
}

.wrap {
  max-width: 700px;
  margin: 0 auto;
  margin-top: 60px;
}

.content {
  padding-left: 40px;
}

a,
a:active,
a:visited {
  color: #aaaaff;
  text-decoration: none;
}

a:hover {
  color: #babaff;
}

.announcement {
  text-align: center;
  font-size: 15px;
  color: #ff0000;
  margin-top: -3px;
  margin-bottom: -20px;
}

.announcement a {
  color: #ff0000;
  text-decoration: underline;
}

.spoiler {
  background-color: #111111;
  color: #111111;
}

.spoiler:hover {
  color: #d7d7d7;
  background-color: transparent;
}

code {
  display: block;
  background-color: #111111;
  color: #00ff00;
  padding-left: 5px;
  font-size: 16px;
}

hr {
  width: 100%;
}

#unity-canvas {
  border: 5px solid rgb(0, 0, 0);
  display: block;
  margin: 0 auto;
}

footer {
  text-align: center;
  font-size: 12px;
  color: #707070;
  margin-bottom: 10px;
  margin-top: 10px;
}

footer hr {
  margin-bottom: 10px;
}

.yt-vid {
  width: 560px;
  height: 315px;
  margin: 0 auto;
  display: block;
  padding-bottom: 6px;
}

.img {
  margin-left: auto;
  margin-right: auto;
  display: block;
  width: 75%;
}

.img-left {
  float: left;
  width: 70%;
  margin: 0 15px 20px 0;
}

.img-right {
  float: right;
  width: 70%;
  margin: 0 0 20px 15px;
}

@media screen and (max-width: 828px) {
  body {
    font-size: 23px;
    background-size: 64px;
  }

  nav {
    background-size: 64px;
    height: 64px;
  }

  nav a,
  nav a:active,
  nav a:visited {
    padding: 14px 3%;
    font-size: 22px;
  }

  .content {
    padding-right: 20px;
  }

  .announcement {
    font-size: 20px;
  }

  .logo {
    display: none;
    /* background-size: 100%; */
    /* width: 10%; */
    /* background-position-x: ; */
  }

  .img-left,
  .img-right {
    float: none;
    margin-left: auto;
    margin-right: auto;
    display: block;
    width: 75%;
  }

  .yt-vid {
    width: 100%;
  }

  footer {
    font-size: 17px;
  }

  .wrap {
    margin-top: 75px;
  }
}

@media screen and (max-width: 560px) {

  nav a,
  nav a:active,
  nav a:visited {
    padding: 14px 2%;
  }
}