section.banner a:hover img, header ul li:last-child a:hover, 
section.about a:hover, section.book button:hover, section.services.page a:hover img,
section.contact.page button:hover, section.contact.page a:hover img,
section.contact.page form b.close:hover {
  animation: wobble 1.2s ease infinite;  
}

@keyframes wobble {
    0%, 100% {
        -webkit-transform: translateX(0%);
        transform: translateX(0%);
        -webkit-transform-origin: 50% 50%;
        transform-origin: 50% 50%;
    }

    15% {
        -webkit-transform: translateX(-15px) rotate(-5deg);
        transform: translateX(-15px) rotate(-5deg);
    }

    30% {
        -webkit-transform: translateX(calc(15px / 2)) rotate(5deg);
        transform: translateX(calc(15px / 2)) rotate(5deg);
    }

    45% {
        -webkit-transform: translateX(calc(-15px / 2)) rotate(calc(-5deg / 1.8));
        transform: translateX(calc(-15px / 2)) rotate(calc(-5deg / 1.8));
    }

    60% {
        -webkit-transform: translateX(calc(15px / 3.3)) rotate(calc(5deg / 3));
        transform: translateX(calc(15px / 3.3)) rotate(calc(5deg / 3));
    }

    75% {
        -webkit-transform: translateX(calc(-15px / 5.5)) rotate(calc(-5deg / 5));
        transform: translateX(calc(-15px / 5.5)) rotate(calc(-5deg / 5));
    }
}