如何在图像滑块中添加文字？

Question

大家好我想知道如何在图片滑块中添加文字。我想为每个图像添加文字。我可以在Photoshop中完成它，但是我将来无法在需要更改的情况下编辑HTML中的文本。我该怎么做呢？

@keyframes slidy {
0% { left: 0%; }
20% { left: 0%; }
25% { left: -115%; }
45% { left: -115%; }
50% { left: -225%; }
70% { left: -225%; }
75% { left: -335%; }
95% { left: -335%; }
100% { left: -445%; }
}

body { margin: 0; } 
div#slider { overflow: hidden; }
div#slider figure img { width: 22%; float: left; }
div#slider figure { 
  position: relative;
  width: 500%;
  height: 34px;
  margin: 0;
  left: 0;
  text-align: left;
  font-size: 0;
  animation: 30s slidy infinite; 
}

#slider {
    max-width: 75%;    
    left: 12.5%;
    max-height: 55%;

}

</div>
	previously -->
		<div class="container center-block">
			<div class="col-xs-12" id="slider">
				<figure>
					<img src="imgs/rdp.jpg" class="img-responsive" />
					<img src="imgs/wires.jpg" class="img-responsive" />
					<img src="imgs/speed.jpg" class="img-responsive" />
					<img src="imgs/tech.jpg" class="img-responsive" />
				</figure>
			</div>
		</div>