.content-wrap {
    overflow-y: scroll;
    -webkit-overflow-scrolling: touch;
}
/* Menu Button */
.menu-button {
    position: fixed;
    top: 22px;
    right: 10px;
    z-index: 1000;
    padding: 0 !important;
    margin: 0 !important;
    width: 45px;
    height: 35px;
    border: none;
    font-size: 1.5em;
    color: #373a47;
    background: transparent;
    cursor: pointer;
    border: none;
    outline: none;
}
/* 图片旋转*/
@-webkit-keyframes rotation{
    from {-webkit-transform: rotate(0deg);}
    to {-webkit-transform: rotate(360deg);}
}
/* 图片旋转样式*/
.menu-rotation{
    -webkit-transform: rotate(360deg);
    animation: rotation 3s linear infinite;
    -moz-animation: rotation 3s linear infinite;
    -webkit-animation: rotation 3s linear infinite;
    -o-animation: rotation 3s linear infinite;
}
/* 图片旋转样式*/
.menu-button img {
    width: 35px;
    height: 35px;
    border-radius: 50%;
}

.menu-button:hover {
    opacity: 0.8;
}

/* Menu */
.menu-wrap {
    position: fixed;
    z-index: 999;
    /* background: #ebedf4; */
    -webkit-transition: width 0.3s, height 0.3s;
    transition: width 0.3s, height 0.3s;
    width: 0;
    height: 0;
    font-size: 1.5em;
    top: 0;
    right: 0;
    -webkit-transform-origin: 0% 100%;
    transform-origin: 0% 100%;
}
/* 屏幕适应*/
@media screen and (max-width: 50em) {
    .menu-button {
        margin: 0.25em;
    }
    .menu-wrap {
        /*bottom: 0.25em;
        left: 0.25em;*/
    }
}
/* Shown menu */
.show-menu .menu-wrap {
    width: 360px;
    height: 440px;
    -webkit-animation: anim-jelly 0.8s linear forwards;
    animation: anim-jelly 0.8s linear forwards;
}

页面定制CSS代码