*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

body{
    background-color: blueviolet;

}

#triangle-right {
    width: 0;
    height: 0;
    border-top: 50px solid transparent;
    border-left: 100px solid red;
    border-bottom: 50px solid transparent;
    transition: all 0.5s ease-in;
  }
  #triangle-right.change-me{
    border-left: 100px solid blue;
    /* translate: 200px; */
    transform: translateX(200px) translateY(400px) rotate(20deg) scale(2.5);
  }