*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
body{
    background-color:aquamarine;
}
h1{
    font-family: Arial, Helvetica, sans-serif;
}
#rectangle {
    width: 200px;
    height: 100px;
    background: red;
  }
  #trapezoid {
    border-bottom: 100px solid red;
    border-left: 25px solid transparent;
    border-right: 25px solid transparent;
    height: 0;
    width: 100px;
  }
  #pentagon {
    position: relative;
    width: 54px;
    box-sizing: content-box;
    border-width: 50px 18px 0;
    border-style: solid;
    border-color: red transparent;
    transition: all 0.4s ease-in;
  }
  #pentagon:before {
    content: "";
    position: absolute;
    height: 0;
    width: 0;
    top: -85px;
    left: -18px;
    border-width: 0 45px 35px;
    border-style: solid;
    border-color: transparent transparent red;
    transition: all 0.4s ease-in;
  }
  #infinity {
    position: relative;
    width: 212px;
    height: 100px;
    box-sizing: content-box;
  }
  #infinity:before,
  #infinity:after {
    content: "";
    box-sizing: content-box;
    position: absolute;
    top: 0;
    left: 0;
    width: 60px;
    height: 60px;
    border: 20px solid red;
    border-radius: 50px 50px 0 50px;
    transform: rotate(-45deg);
  }
  #infinity:after {
    left: auto;
    right: 0;
    border-radius: 50px 50px 50px 0;
    transform: rotate(45deg);
  }

  #pentagon.change-me{
  border-color: blue transparent;
  /*translate: 1000px;*/
  transform: translateX(180deg) scale(.5) rotate(180deg); 
  }

  #pentagon.change-me:before{
  border-color: blue transparent;
  }

  img{
    width: .01%;
    height: auto;
  }

  #fn.change {
  transform: translateX(1080px) scale(1000) rotate(1800deg);
  transition: all 0.2s ease-in;
  }