我发现了MDUI和mdui.editor一起用的时候的一个bug

见：https://github.com/zdhxiong/mdui.editor/issues/10

在mdui.editor(v1.0.2)和mdui(v.1.0.1)两个版本都引入的情况下，使用mdui-fab会导致按钮不是圆形的

修复方式：在他们俩之后引入文末代码（位于mdui.css中，找到“Fab 浮动操作按钮”）即可修复。

（暗暗吐槽：我觉得作者是复制前面复制的太快了，忘记把浮动给复制过去了！）

代码如下：

/**
 * =============================================================================
 * ************   Fab 浮动操作按钮   ************
 * =============================================================================
 */
/* 浮动操作按钮 */
.mdui-fab {
    width: 56px;
    min-width: 56px;
    height: 56px;
    margin: auto;
    padding: 0 !important;
    overflow: hidden;
    font-size: 24px;
    line-height: normal !important;
    border-radius: 50%;
    -webkit-box-shadow: 0 3px 5px -1px rgba(0, 0, 0, 0.2), 0 6px 10px 0 rgba(0, 0, 0, 0.14), 0 1px 18px 0 rgba(0, 0, 0, 0.12);
    box-shadow: 0 3px 5px -1px rgba(0, 0, 0, 0.2), 0 6px 10px 0 rgba(0, 0, 0, 0.14), 0 1px 18px 0 rgba(0, 0, 0, 0.12);
}
.mdui-fab:hover {
    -webkit-box-shadow: 0 5px 5px -3px rgba(0, 0, 0, 0.2), 0 8px 10px 1px rgba(0, 0, 0, 0.14), 0 3px 14px 2px rgba(0, 0, 0, 0.12);
    box-shadow: 0 5px 5px -3px rgba(0, 0, 0, 0.2), 0 8px 10px 1px rgba(0, 0, 0, 0.14), 0 3px 14px 2px rgba(0, 0, 0, 0.12);
}
.mdui-fab:active {
    -webkit-box-shadow: 0 7px 8px -4px rgba(0, 0, 0, 0.2), 0 12px 17px 2px rgba(0, 0, 0, 0.14), 0 5px 22px 4px rgba(0, 0, 0, 0.12);
    box-shadow: 0 7px 8px -4px rgba(0, 0, 0, 0.2), 0 12px 17px 2px rgba(0, 0, 0, 0.14), 0 5px 22px 4px rgba(0, 0, 0, 0.12);
}
.mdui-fab .mdui-icon {
    position: absolute;
    top: 0;
    left: 0;
    width: 24px;
    margin-top: 16px;
    margin-left: 16px;
    line-height: 24px;
}
/* mini 型浮动操作按钮 */
.mdui-fab-mini {
    width: 40px;
    min-width: 40px;
    height: 40px;
}
.mdui-fab-mini .mdui-icon {
    margin-top: 8px;
    margin-left: 8px;
}
/* 固定到右下角的 FAB 按钮 */
.mdui-fab-fixed,
.mdui-fab-wrapper {
    position: fixed !important;
    /* 手机平板上距离屏幕右下角 16px */
    right: 16px;
    bottom: 16px;
}
@media (min-width: 1024px) {
    .mdui-fab-fixed,
    .mdui-fab-wrapper {
        /* 电脑上距离屏幕右下角 24px */
        right: 24px;
        bottom: 24px;
    }
}
/* 含菜单的浮动操作按钮 */
.mdui-fab-wrapper {
    position: relative;
    z-index: 4000;
    width: 56px;
    height: 56px;
    padding-top: 8px;
    text-align: center;
}
.mdui-fab-wrapper > .mdui-fab .mdui-icon:not(.mdui-fab-opened) {
    opacity: 1;
    -webkit-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
}
.mdui-fab-wrapper > .mdui-fab .mdui-icon.mdui-fab-opened {
    -webkit-transform: rotate(225deg);
    transform: rotate(225deg);
    opacity: 0;
    -webkit-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
}
.mdui-fab-wrapper > .mdui-fab.mdui-fab-opened .mdui-icon:not(.mdui-fab-opened) {
    -webkit-transform: rotate(225deg);
    transform: rotate(225deg);
    opacity: 0;
}
.mdui-fab-wrapper > .mdui-fab.mdui-fab-opened .mdui-icon.mdui-fab-opened {
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
    opacity: 1;
}
.mdui-fab-wrapper > .mdui-fab-mini {
    margin-top: 8px;
}
.mdui-fab-wrapper .mdui-fab-dial {
    position: absolute;
    right: 0;
    bottom: 64px;
    left: 0;
    height: 0;
    text-align: center;
    visibility: visible;
}
.mdui-fab-wrapper .mdui-fab-dial .mdui-fab {
    margin: 8px 0;
    -webkit-transform: scale(0);
    transform: scale(0);
    opacity: 0;
    -webkit-transition: color 0.2s cubic-bezier(0.4, 0, 0.2, 1), opacity 150ms cubic-bezier(0.4, 0, 0.2, 1), -webkit-box-shadow 0.2s cubic-bezier(0.4, 0, 1, 1), -webkit-transform 150ms cubic-bezier(0.4, 0, 0.2, 1);
    transition: color 0.2s cubic-bezier(0.4, 0, 0.2, 1), opacity 150ms cubic-bezier(0.4, 0, 0.2, 1), -webkit-box-shadow 0.2s cubic-bezier(0.4, 0, 1, 1), -webkit-transform 150ms cubic-bezier(0.4, 0, 0.2, 1);
    transition: box-shadow 0.2s cubic-bezier(0.4, 0, 1, 1), color 0.2s cubic-bezier(0.4, 0, 0.2, 1), transform 150ms cubic-bezier(0.4, 0, 0.2, 1), opacity 150ms cubic-bezier(0.4, 0, 0.2, 1);
    transition: box-shadow 0.2s cubic-bezier(0.4, 0, 1, 1), color 0.2s cubic-bezier(0.4, 0, 0.2, 1), transform 150ms cubic-bezier(0.4, 0, 0.2, 1), opacity 150ms cubic-bezier(0.4, 0, 0.2, 1), -webkit-box-shadow 0.2s cubic-bezier(0.4, 0, 1, 1), -webkit-transform 150ms cubic-bezier(0.4, 0, 0.2, 1);
}
.mdui-fab-wrapper .mdui-fab-dial.mdui-fab-dial-show .mdui-fab {
    -webkit-transform: scale(1);
    transform: scale(1);
    opacity: 1;
}
/* 添加类 .mdui-fab-hide 以动画的形式隐藏按钮 */
.mdui-fab,
.mdui-fab-mini,
.mdui-fab-wrapper {
    -webkit-transform: scale(1) translateZ(0);
    transform: scale(1) translateZ(0);
    -webkit-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1), -webkit-box-shadow 0.2s cubic-bezier(0.4, 0, 1, 1), -webkit-transform 0.2s;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1), -webkit-box-shadow 0.2s cubic-bezier(0.4, 0, 1, 1), -webkit-transform 0.2s;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s cubic-bezier(0.4, 0, 1, 1), transform 0.2s;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s cubic-bezier(0.4, 0, 1, 1), transform 0.2s, -webkit-box-shadow 0.2s cubic-bezier(0.4, 0, 1, 1), -webkit-transform 0.2s;
    will-change: transform;
}
.mdui-fab.mdui-fab-hide,
.mdui-fab-mini.mdui-fab-hide,
.mdui-fab-wrapper.mdui-fab-hide {
    -webkit-transform: scale(0) translateZ(0);
    transform: scale(0) translateZ(0);
}