- 当前 Bug 的表现（可附上截图）

- 预期表现

- 复现路径

- 提供一个最简复现 Demo

iphone7手机input的背景颜色在video上看不到

<div class="my-video">

<txv-video v-if='video_list.length > video_index && video_flag && video_list[video_index].video_address' class='video' :muted='true' :vid="video_list[video_index].video_address" :playerid="video_list[video_index].video_address" object-fit='cover' :show-progress='true' :controls='false' :loop='true' :isHiddenStop='true' :show-center-play-btn='false' direction='0' :width='fit' v-bind:height='fit' :autoplay="true"></txv-video>

</div>

<input v-if='autoFocus' :value='input_val' :adjust-position='false' :style="'bottom:' + key_height" class='my-input animated slideInUp' placeholder='输入我的看法...' :focus='autoFocus' @confirm='bindconfirm' @blur='autoFocus = false' @focus='inputFunc' @input='getTxt'/>