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HTML 

              
                <div class="wrapper">
  <div class="painting morning">
    <div class="sun"></div>
    <div class="mountain back">
      <div class="peak peak1"></div>
      <div class="peak peak2"></div>
      <div class="peak peak3"></div>
      <div class="peak peak4"></div>
      <div class="peak peak5"></div>
      <div class="peak peak6"></div>
      <div class="peak peak7"></div>
    </div>
    <div class="mountain mid">
      <div class="peak peak1"></div>
      <div class="peak peak2"></div>
      <div class="peak peak3"></div>
      <div class="peak peak4"></div>
      <div class="peak peak5"></div>
      <div class="peak peak6"></div>
    </div>
    <div class="mountain front right">
      <div class="tree tree1"></div>
      <div class="tree tree2"></div>
      <div class="tree tree3"></div>
      <div class="tree tree4"></div>
    </div>
    <div class="mountain front left">
      <div class="tree tree1"></div>
      <div class="tree tree2"></div>
      <div class="tree tree3"></div>
    </div>
  </div>
  <div class="painting noon">
    <div class="sun"></div>
    <div class="mountain back">
      <div class="peak peak1"></div>
      <div class="peak peak2"></div>
      <div class="peak peak3"></div>
      <div class="peak peak4"></div>
      <div class="peak peak5"></div>
      <div class="peak peak6"></div>
      <div class="peak peak7"></div>
    </div>
    <div class="mountain mid">
      <div class="peak peak1"></div>
      <div class="peak peak2"></div>
      <div class="peak peak3"></div>
      <div class="peak peak4"></div>
      <div class="peak peak5"></div>
      <div class="peak peak6"></div>
    </div>
    <div class="mountain front right">
      <div class="tree tree1"></div>
      <div class="tree tree2"></div>
      <div class="tree tree3"></div>
      <div class="tree tree4"></div>
    </div>
    <div class="mountain front left">
      <div class="tree tree1"></div>
      <div class="tree tree2"></div>
      <div class="tree tree3"></div>
    </div>
  </div>
  <div class="painting evening">
    <div class="sun"></div>
    <div class="mountain back">
      <div class="peak peak1"></div>
      <div class="peak peak2"></div>
      <div class="peak peak3"></div>
      <div class="peak peak4"></div>
      <div class="peak peak5"></div>
      <div class="peak peak6"></div>
      <div class="peak peak7"></div>
    </div>
    <div class="mountain mid">
      <div class="peak peak1"></div>
      <div class="peak peak2"></div>
      <div class="peak peak3"></div>
      <div class="peak peak4"></div>
      <div class="peak peak5"></div>
      <div class="peak peak6"></div>
    </div>
    <div class="mountain front right">
      <div class="tree tree1"></div>
      <div class="tree tree2"></div>
      <div class="tree tree3"></div>
      <div class="tree tree4"></div>
    </div>
    <div class="mountain front left">
      <div class="tree tree1"></div>
      <div class="tree tree2"></div>
      <div class="tree tree3"></div>
    </div>
  </div>
  <div class="painting night">
    <div class="sun"></div>
    <div class="mountain back">
      <div class="peak peak1"></div>
      <div class="peak peak2"></div>
      <div class="peak peak3"></div>
      <div class="peak peak4"></div>
      <div class="peak peak5"></div>
      <div class="peak peak6"></div>
      <div class="peak peak7"></div>
    </div>
    <div class="mountain mid">
      <div class="peak peak1"></div>
      <div class="peak peak2"></div>
      <div class="peak peak3"></div>
      <div class="peak peak4"></div>
      <div class="peak peak5"></div>
      <div class="peak peak6"></div>
    </div>
    <div class="mountain front right">
      <div class="tree tree1"></div>
      <div class="tree tree2"></div>
      <div class="tree tree3"></div>
      <div class="tree tree4"></div>
    </div>
    <div class="mountain front left">
      <div class="tree tree1"></div>
      <div class="tree tree2"></div>
      <div class="tree tree3"></div>
    </div>
  </div>
</div>
<div class="message">
  &check; Made by <a href="https://codepen.io/pieter-biesemans/" target="_blank" title="&check; check out my other work">Pieter Biesemans</a> with &#9749;, &#128420; &amp; &#8986;</i>
</div>
!

CSS 

              
                $white: rgba(255,255,255,1);
$black: rgba(0,0,0,1);
$morningbg: rgba(253,242,235,1);
$noonbg: rgba(252,222,201,1);
$eveningbg: rgba(220,158,114,1);
$nightbg: rgba(97,68,48,1);
$lightsalmon: rgba(254,231,212,1);
$darksalmon: rgba(252,222,201,1);
$lightblue: rgba(140,202,202,1);
$midblue: rgba(8,91,144,1);
$darkblue: rgba(16,24,84,1);
$red: rgba(243,83,102,1);

@mixin horizontalcenter(){
  left: 50%;
  transform: translatex(-50%);
}

@mixin verticalcenter(){
  top: 50%;
  transform: translatey(-50%);
}

@mixin centercenter(){
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

@mixin tree($p_height, $p_color){
  width: 0;
  height: 0;
  margin-top: $p_height;
  margin-left: $p_height / 4;
  border-width: 0 $p_height*0.75 $p_height*2.5 $p_height*0.75;
  border-style: solid;
  border-color: transparent transparent $p_color transparent;
  overflow: visible;
  &:before, &:after{
    display: block;
    width: 0;
    height: 0;
    border-style: solid;
    border-color: transparent transparent $p_color transparent;
  }
  &:before{
    top: -$p_height*0.85;
    @include horizontalcenter();
    border-width: 0 $p_height*0.55 $p_height*2 $p_height*0.55;
  }
  &:after{
    top: -$p_height*1.45;
    @include horizontalcenter();
    border-width: 0 $p_height*0.45 $p_height*1.5 $p_height*0.45;
  }
}

@mixin peak($p_width){
  border-style: solid;
  border-width: 0 $p_width*0.5 $p_width*0.86 $p_width*0.5;
  border-color: transparent transparent #007bff transparent;
}

div{
  position: absolute;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  overflow: hidden;
  &:before, &:after{
    content: '';
    position: absolute;
    display: none;
    box-sizing: border-box;
  }
}

body{
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  margin: 0;
  padding: 0;
  background: radial-gradient(ellipse at center, white 0%, $lightsalmon 50%);
  
  & .wrapper{
    top: 50%;
    left: 0;
    width: 100vw;
    height: 30vw;
    margin: 0;
    padding: 0;
    transform: translatey(-50%);
    white-space: nowrap;
    overflow: visible;
    
    & .painting{
      position: relative;
      display: inline-block;
      width: 20vw;
      height: 30vw;
      margin: 0 2vw;
      border: 0.75vw solid white;
      box-shadow: 0 0 5vw $darksalmon;
      background: $darksalmon;
      overflow: hidden;
     
      & .mountain{
        overflow: visible;
        &.front.left{
          top: 80%;
          left: -40%;
          width: 120%;
          height: 60%;
          background: $darkblue;
          transform: rotate(30deg);
          &:before, &:after{
            display: block;
            width: 60%;
            height: 40%;
            background: $darkblue;
          }
          &:before{
            top: -5%;
            left: -30%;
            transform: rotate(8deg);
          }
          &:after{
            top: -1%;
            left: 55%;
            transform: rotate(-10deg);
          }
          
          & .tree{
            transform: rotate(-30deg);
            &.tree1{
              top: -6vw;
              left: 5%;
              @include tree(2vw, $darkblue);  
            }
            &.tree2{
              top: -5vw;
              left: 25%;
              @include tree(1.75vw, $darkblue);  
            }
            &.tree3{
              top: -4vw;
              left: 40%;
              @include tree(1.5vw, $darkblue);  
            }
          }
          
        }
        &.front.right{
          top: 75%;
          left: 40%;
          width: 120%;
          height: 60%;
          background: $midblue;
          transform: rotate(-30deg);
          
          & .tree{
            transform: rotate(30deg);
            &.tree1{
              top: -3.5vw;
              right: 30%;
              @include tree(1.25vw, $midblue);  
            }
            &.tree2{
              top: -6vw;
              right: 40%;
              @include tree(2vw, $midblue);  
            }
            &.tree3{
              top: -3vw;
              right: 60%;
              @include tree(1vw, $midblue);  
            }
          }
          
        }
        &.mid{
          top: 60%;
          left: 0;
          width: 100%;
          height: 30%;
          filter: drop-shadow(0 0 3vw $white);
          & .peak{
            background: linear-gradient(135deg, $lightblue 0%, $white 50%);
            transform: rotate(45deg);
            &.peak1{
              top: 10%;
              left:-10%;
              width: 60%;
              padding-top: 60%;
            }
            &.peak2{
              top: 0;
              left: 30%;
              width: 60%;
              padding-top: 60%;
            }
            &.peak3{
              top: 20%;
              left:-27%;
              width: 60%;
              padding-top: 60%;
            }
            &.peak4{
              top: 22%;
              left: 52%;
              width: 60%;
              padding-top: 60%;
            }
            &.peak5{
              top: 12%;
              left: 65%;
              width: 60%;
              padding-top: 60%;
            }
            &.peak6{
              top: 5%;
              left: 15%;
              width: 60%;
              padding-top: 60%;
            }
          }
        }
        &.back{
          top: 30%;
          left: 0;
          width: 100%;
          height: 70%;
          
          & .peak{
            background: linear-gradient(45deg, $lightblue 50%, $white 50%);
            transform: rotate(45deg);
            &.peak1{
              top: 25%;
              left: -40%;
              width: 100%;
              padding-top: 100%;
            }
            &.peak2{
              top: 22%;
              left: -30%;
              width: 100%;
              padding-top: 100%;
            }
            &.peak3{
              top: 15%;
              left: -15%;
              width: 100%;
              padding-top: 100%;
            }
            &.peak4{
              top: 10%;
              left:0%;
              width: 100%;
              padding-top: 100%;
            }
            &.peak5{
              top: 15%;
              left:10%;
              width: 100%;
              padding-top: 100%;
            }
            &.peak6{
              top: 25%;
              left:25%;
              width: 100%;
              padding-top: 100%;
            }
            &.peak7{
              top: 30%;
              left: 40%;
              width: 100%;
              padding-top: 100%;
            }
          }
          
        }
      }
      
      & .sun{
        top: 10%;
        @include horizontalcenter();
        width: 70%;
        padding-top: 70%;
        border-radius: 50%;
        background: $red;
      }

      &.morning{
        
        background: $morningbg;
        filter: saturate(0.5) brightness(0.8);
        
        & .sun{
          top: 30%;
          left: -40%;
          transform: translatey(0);
        }
        
      }
      
      &.noon{
        
        background: $noonbg;
        filter: saturate(1) brightness(1);
        
        & .sun{
        }
        
      }
      
      &.evening{
        
        background: $eveningbg;
        filter: saturate(0.65) brightness(0.9);
        
        & .sun{
          top: 15%;
          left: 40%;
          transform: translatey(0);
        }
        
      }
      
      &.night{
        
        background: $nightbg;
        filter: hue-rotate(0) saturate(0.15) brightness(0.25);
        
        & .sun{
          display: none;
          top: 15%;
          left: 40%;
          transform: translatey(0);
        }
        
      }
      
    }
    
  }

  & .message{
    position: absolute;
    right:  0.5vw;
    bottom: 1vw;
    max-width: 30vw;
    font-size: 0.75em;
    font-family: "Open Sans", sans-serif;

    & a{
      color: inherit;
      text-decoration: none;
      border-bottom: 1px solid #444;
      &:hover{
        border-width: 3px;
      }
    }

  }
  
}
!

JS 

              
                /*
This Codepen is in the Public Domain.
You can use it for whatever purpose you like, except evil.

The composition was inspired by an artwork by Josh Warren, check out his other amazing work! (https://dribbble.com/shots/2529676-Top-of-the-world)

*/
!
999px

Console