.wrapper {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  align-items: start;
}

.main,
.sidebar {
  padding: 15px;
}

.main {
  width: 100%;
}

.sidebar {
min-width: 270px;
  position: -webkit-sticky;
  position: sticky;
  top: 120px;
  background: #30473f;
  color: white;
}
.sidebar .social-box{
    display: flex;
    gap: 15px;
    margin-top: 20px;
}
.sidebar .social-box li a{
    font-size: 28px;
    text-decoration: none;
}
.sidebar .social-box li a:hover{
    color: white;
}

.sidebar h2{
font-size: 25px;
}
.sidebar h3{
font-size: 21px;
color: rgb(241, 241, 241);
}
.sidebar a{
color: rgb(200, 200, 200);
font-size: 15px;
text-decoration: underline;
}
.main h1{
font-size:28px;
}
.main h2{
font-size:23px;
}
.main .content{
font-size:18px;
}
/* ********************************* */
/* ********************************* */

.demo-gallery > ul {
    margin-bottom: 0;
    padding-left: 15px;
  }
  
  .demo-gallery > ul > li {
    margin-bottom: 15px;
    width: 180px;
    display: inline-block;
    margin-right: 15px;
    list-style: outside none none;
  }
  
  .demo-gallery > ul > li a {
    border: 3px solid #FFF;
    border-radius: 3px;
    display: block;
    overflow: hidden;
    position: relative;
    float: left;
  }
  
  .demo-gallery > ul > li a > img {
    -webkit-transition: -webkit-transform 0.15s ease 0s;
    -moz-transition: -moz-transform 0.15s ease 0s;
    -o-transition: -o-transform 0.15s ease 0s;
    transition: transform 0.15s ease 0s;
    -webkit-transform: scale3d(1, 1, 1);
    transform: scale3d(1, 1, 1);
    height: 100%;
    width: 100%;
  }
  
  .demo-gallery > ul > li a:hover > img {
    -webkit-transform: scale3d(1.1, 1.1, 1.1);
    transform: scale3d(1.1, 1.1, 1.1);
  }
  
  .demo-gallery > ul > li a:hover .demo-gallery-poster > img {
    opacity: 1;
  }
  
  .demo-gallery > ul > li a .demo-gallery-poster {
    background-color: rgba(0, 0, 0, 0.1);
    bottom: 0;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    -webkit-transition: background-color 0.15s ease 0s;
    -o-transition: background-color 0.15s ease 0s;
    transition: background-color 0.15s ease 0s;
  }
  
  .demo-gallery > ul > li a .demo-gallery-poster > img {
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    opacity: 0;
    position: absolute;
    top: 50%;
    -webkit-transition: opacity 0.3s ease 0s;
    -o-transition: opacity 0.3s ease 0s;
    transition: opacity 0.3s ease 0s;
  }
  
  .demo-gallery > ul > li a:hover .demo-gallery-poster {
    background-color: rgba(0, 0, 0, 0.5);
  }
  
  .demo-gallery .justified-gallery > a > img {
    -webkit-transition: -webkit-transform 0.15s ease 0s;
    -moz-transition: -moz-transform 0.15s ease 0s;
    -o-transition: -o-transform 0.15s ease 0s;
    transition: transform 0.15s ease 0s;
    -webkit-transform: scale3d(1, 1, 1);
    transform: scale3d(1, 1, 1);
    height: 100%;
    width: 100%;
  }
  
  .demo-gallery .justified-gallery > a:hover > img {
    -webkit-transform: scale3d(1.1, 1.1, 1.1);
    transform: scale3d(1.1, 1.1, 1.1);
  }
  
  .demo-gallery .justified-gallery > a:hover .demo-gallery-poster > img {
    opacity: 1;
  }
  
  .demo-gallery .justified-gallery > a .demo-gallery-poster {
    background-color: rgba(0, 0, 0, 0.1);
    bottom: 0;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    -webkit-transition: background-color 0.15s ease 0s;
    -o-transition: background-color 0.15s ease 0s;
    transition: background-color 0.15s ease 0s;
  }
  
  .demo-gallery .justified-gallery > a .demo-gallery-poster > img {
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    opacity: 0;
    position: absolute;
    top: 50%;
    -webkit-transition: opacity 0.3s ease 0s;
    -o-transition: opacity 0.3s ease 0s;
    transition: opacity 0.3s ease 0s;
  }
  
  .demo-gallery .justified-gallery > a:hover .demo-gallery-poster {
    background-color: rgba(0, 0, 0, 0.5);
  }
  
  .demo-gallery .video .demo-gallery-poster img {
    height: 48px;
    margin-left: -24px;
    margin-top: -24px;
    opacity: 0.8;
    width: 48px;
  }
  
  .demo-gallery.dark > ul > li a {
    border: 3px solid #04070a;
  }
  @media only screen and (max-width: 479px) {
  .wrapper {
    flex-wrap: wrap;
}
.sidebar{
    position: static;
    width: 100%;
    text-align: center;
}
.sidebar .social-box{
    justify-content: center;
}
.demo-gallery > ul{
    padding: 0;
}
.demo-gallery > ul > li {
    width: 41vw;
    margin: auto;
}
}