.tf_ani-linear-gradient:before{content:"";background:linear-gradient(45deg,#f00,#ff7300,#fffb00,#48ff00,#00ffd5,#002bff,#7a00ff,#ff00c8,#f00);position:absolute;top:-2px;left:-2px;background-size:400%;z-index:-1;filter:blur(5px);width:calc(100% + 4px);height:calc(100% + 4px);animation:glowing 20s linear infinite;transition:opacity .3s ease-in-out;border-radius:10px}.tf_ani-linear-gradient:after{z-index:-1;content:"";position:absolute;width:100%;height:100%;background-color:inherit;left:0;top:0}.tf_ani-pulsebox-1{cursor:pointer;animation:pulse_two 2s infinite}