:root {
  --bg-color: #d7f8e5;
  --border-color: #7c9b89;
  --subtitle-color: #35a363;
  --link-color: #18bc5a;
}

html, body {
  width: 50%;
  margin: auto;
  padding: 0;
  background-color:#a7efb8;
}

body a {
  color: var(--link-color);
}

header {
  width: 400px;
  height: 400px;
  background-size: 103%;
  background-image: url('https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTIfDYSAyBMCBr8Fx0tBZu1ey6I5hn-YDHSoCoCWIQiOIcmtxbV2l0D3F8&s=10');
}

.bg-image {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background-image: url('https://ip.index.hr/remote/bucket.index.hr/b/index/4970d8cc-7019-421a-85ee-149b4a231826.jpg?width=1220&height=660&mode=max');
  filter: blur(8px);
  -webkit-filter: blur(4px);
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
}

.flex {
  display: flex;
}

.side-gif {
  position: fixed;
  top: 50%;
  width: 260px;
  z-index: 0;
  pointer-events: none;
}

.gif-left {
  left: 12.5%;
  transform: translate(-50%, -50%);
}

.gif-right {
  left: 87.5%;
  transform: translate(-50%, -50%);
}

.video-wrap {
  position: relative;
  width: 100%;
  height: 0;
  padding-bottom: 56.25%;
  overflow: hidden;
  margin: 10px 0;
}

.video-wrap iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.sidebar {
  background-color: var(--bg-color);
  max-width: 250px;
  width: 200px;
  height: 100vh;
  border: 1px solid var(--border-color);
  position: fixed;
}

article {
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  margin-top: 20px;
  max-width: 370px;
  margin-left: 10px;
  margin-right: 10px;

}

.subtitle {
  color: var(--subtitle-color);
  font-size: 18px;
  font-weight: bold;
  border-bottom: 2px solid var(--subtitle-color);
  margin-left: 10px;
  margin-right: 10px;
  text-align: right;
  padding-top: 20px;
}

article>p {
  padding: 10px;
  padding-left: 20px;
}

.links {
  list-style-type: '+';
  font-size: 16px;

}

.links li a {
  color: var(--link-color);
  letter-spacing: 1px;
  text-decoration: none;
}

main {
  margin-top: -21px;
}

section>p {
  padding: 10px;
}

footer {
  margin-left: 20px;
  max-width: 30%;
  font-size: 12px;
}

@media only screen and (max-width: 900px) {
  .side-gif {
    width: 150px;
  }
}

@media only screen and (max-width: 630px) {
  .side-gif {
    display: none;
  }

  .sidebar {
    position: relative;
    max-width: 100%;
    width: 100%;
    height: 150px;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    overflow: hidden;
  }

  .flex {
    flex-wrap: wrap;
    flex-direction: row;
  }

  .right {
    order: 1;
    width: 100%;
  }

  .left {
    order: 2;
  }

  section {
    display: flex;
    flex-wrap: wrap;
    width: 120px;
  }
}