.gototop {
    width: 60px;
    height: 130px;
    display: none;
    background: url("../../static/jpg/top.png") no-repeat center center;
    position: fixed;
    bottom: 10px;
    right: 1.4%;
    z-index: 99;
    -webkit-animation: hide 350ms ease-out forwards 1;
    animation: hide 350ms ease-out forwards 1;
    -webkit-transition: background-color 100ms ease-in-out;
    transition: background-color 100ms ease-in-out;

}

.isvisible {
    -webkit-animation: show 1s ease-out forwards 1;
    animation: show 1s ease-out forwards 1;
}

@-webkit-keyframes hide {
    0% {
        opacity: 1;
        -webkit-transform: translateY(0);
    }
    25% {
        opacity: .5;
        -webkit-transform: rotate(-3deg) translateY(-40px);
    }
    75% {
        -webkit-transform: rotate(3deg);
    }
    100% {
        opacity: 0;
        -webkit-transform: translateY(100px);
    }
}

@keyframes hide {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    25% {
        opacity: .5;
        transform: rotate(-3deg) translateY(-40px);
    }
    75% {
        transform: rotate(3deg);
    }
    100% {
        opacity: 0;
        transform: translateY(100px);
    }
}

@-webkit-keyframes show {
    0% {
        -webkit-transform: rotate(0deg);
    }
    25% {
        opacity: .5;
        -webkit-transform: rotate(-3deg) translateY(-40px);
    }
    75% {
        -webkit-transform: rotate(3deg);
    }
    100% {
        opacity: 1;
        -webkit-transform: rotate(0deg);
    }
}

@keyframes show {
    0% {
        transform: rotate(0deg);
    }
    25% {
        opacity: .5;
        transform: rotate(-3deg) translateY(-40px);
    }
    75% {
        transform: rotate(3deg);
    }
    100% {
        opacity: 1;
        transform: rotate(0deg);
    }
}