-1
<div id="wrapper">
<div style="position: absolute; left: 10px; top: 10px; width:200px; height:100px; background-color: yellow;">
<FORM><INPUT TYPE="button" onClick="history.go(0)" VALUE="Restart!"></FORM>
</div>
<div style="position: absolute; z-index: 1; left: 50px; top: 20px; width:100px; height:20px;">
<canvas width="400" height="500" class="codehs-editor-canvas"></canvas>
</div>
</div>
为什么不是在画布顶部的按钮请帮忙,我已经尝试重新排列代码,但总是帆布在上面。请帮助:)安排画布层