*{
    margin: 0;
    padding:0;
    box-sizing: border-box;
}
ul{
    list-style: none;
}
body{
    background-color: #b4f6e1;
}
canvas{
    display: block;
    margin: 0 auto;
    border: 1px solid #ccc;
    background-color: #fff;
}
header{
    width: 1000px;
    margin: 0 auto;
    height: 80px;
    border: 1px solid #ccc;
    margin-top: 100px;
    border-bottom: 0;
    background-color:#ccc ;
}
ul{
    width: 100%;
    text-align: justify;
}
header ul li{
    display: inline-block;
    width: 127px;
    text-align: center;
    line-height: 80px;
}
ul:after{
    content: "";
    display: inline-block;
    width: 100%;
}
header ul li>div>div{
    cursor: pointer;
}
.xiancu,.opacity,.jiandu,.xudu{
    width: 35px;
}
aside{
    width: 120px;
    height: 802px;
    position: absolute;
    left: 50%;
    top:180px;
    margin-left: -620px;
    background: #ccc;
}
aside ul li{
    width: 100%;
    text-align: center;
    line-height: 50px;
}
ul li{
    position: relative;
}
li div,li p{
    cursor: pointer;
}
li>p:hover{
    background-color: #999;
}

ul li>div{
    width: 100%;
    display: none;
    position: absolute;
    top:0;
    left:0;
    background-color: #f2f2f2;
    box-shadow: 1px 1px 5px rgba(0,0,0,0.3);
    z-index:11;
}
ul li:hover>div{
    display: block;
}
ul li:hover>div>div:hover{
    background-color: #999;
}
.canvasbox{
    position: relative;
    width: 1000px;
    height: 800px;
    margin: 0 auto;
}
.canvaszhezhao{
    position: absolute;
    top:0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    cursor: crosshair;
}
.xp{
    width: 10px;
    height: 10px;
    border: 1px solid #222;
    position: absolute;
    display: none;
    z-index: 5;
    background: #fff;

}
.xiangpili{
    text-align: center;
}
.xiangpisize{
    width: 80px;
}
.checkbox{
    position: absolute;
    display: none;
    width: 20px;
    height: 200px;
    border: 1px dashed #ccc;
}