/**
*@module ex7
*@author XXX
*@description 样式设置
*@version 1.0
*/

#myCanvas{	
    border:1px solid #000000;

}

.container{
    width:90%;
    margin:auto;
    display: flex;
    flex-direction: row-reverse;
    justify-content: center;
    align-items:middle;
}