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


body {
    
background: yellow;
font-family: Arial, Helvetica, sans-serif;

}

#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;
}
#trianglr-right.change-me{
    border-left: 100px solid blue !important;
   /* translate: 200px; */
   transform: translateX(200px) translateY(400) rotate(20deg) scale(2.5);
}