ute; left: 18px; top: 18px; color: white; background: rgba(0, 0, 0, 0.6); padding: 20px; border-radius: 25px;min-width:200px; font-size:24px; font-family: 宋体;">
                  <div class="defultbtn" :class="{'btnon':colorMaterialShow}" @click="colorMaterialClick">纯色材质</div>
                  <div class="defultbtn" :class="{'btnon':imageMaterialShow}" @click="imageMaterialClick">图像材质</div>
                  <div class="defultbtn" :class="{'btnon':compositeMaterialShow}" @click="comp