<TreeSelect 
	:appendToBody="true" 
	class="treeselect-main" 
	v-model="" 
	:options="option"
	:normalizer="normalizer" 
	:show-count="true" 
	placeholder="选择类别" />

//appendToBody 超出不隐藏

.treeselect-main { //防止污染
	line-height: 27px; //字体控制
    font-size: 12px;
	.vue-treeselect__placeholder {
		line-height: 27px;
	}
    .vue-treeselect__input{
        line-height: 27px;
    }
	.vue-treeselect__control {
		height: 27px;
	}
    .vue-treeselect__single-value{ //选中后的样式
        line-height: 27px;
    }
}
.vue-treeselect__menu-container{ //浮层内部样式 写在全局中 浮层被加入到了body里
        font-size: 14px;
        color:#606266;
        font-weight: 100;
}