@media only screen and (min-width :850px){.header-button-1 a{animation:tada 1.2s infinite}@keyframes tada{0%{transform:scaleX(1)}10%,20%{transform:scale3d(1,1,1) rotate(-3deg)}30%,50%,70%,90%{transform:scale3d(1.2,1.2,1.2) rotate(1deg)}40%,60%,80%{transform:scale3d(1.2,1.2,1.2) rotate(-2deg)}100%{transform:scaleX(1)}}.btn_animation{animation:tada 1.2s infinite}}