在悬停时调整背景大小

Question

将鼠标悬停在图像上时,您会看到它将被我的代码中的半透明背景替换.

透明背景应该覆盖所有图片,但是,它只覆盖文本所采用的区域.

无论盒子内的文字是什么,我如何确保它覆盖整个画面？

/*Programs*/

ul.img-list {
  list-style-type: none;
  margin: 0;
  padding: 0;
  text-align: center;
}

ul.img-list li {
  display: inline-block;
  width: 100%;
  height: 100%;
  margin: 0;
  position: relative;
}

div.text-content {
  background: rgba(26,33,43,0.9);
  color: white;
  cursor: pointer;
  display: table;
  left: 0;
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  font-size: 20px;
  font-family: Roboto;
  line-height: 24px;
  font-weight: 200;
  text-align: center;
  overflow-y: auto;
  padding-right: 25px;
  padding-left: 25px;
  padding-top: 25px;
  padding-bottom: 25px;
  box-sizing: border-box;
 -webkit-transition: opacity 500ms;
  -moz-transition: opacity 500ms;
  -o-transition: opacity 500ms;
  transition: opacity 500ms;
  overflow-y: auto;
}

div.text-content div {
  display: block;
  text-align: center;
  vertical-align: middle;
}

ul.img-list li:hover div.text-content {
  opacity: 1;
}

/* Events page */

/*Event link button*/

.btn {
background-color: transparent;
border-radius: 42px;
border: 2px solid #ffffff;
display: inline-block;
cursor: pointer;
font-family: Roboto;
line-height: 28px;
font-size: 24px;
padding: 5px 15px 5px 15px;
margin-right: 45px;
margin-left: 45px;
}

.btn:link {
    color: #ffffff;
    text-decoration: none;
}

.btn:visited {
  color: #1b1c16;
  text-decoration: none;
}

.btn:hover {
  background-color: #ffffff;
  color: #1b1c16 !important;
}

.btn:active {
	position: relative;
	top: 1px;
}

/*All events button*/

.evens_btn {
background: ;
}

.events_btn>span{
color: #f9c70f;
font-family: Roboto;
color: #ffffff;
font-size: 24px !important;
background: ;
text-decoration: none !important;
padding: 10px 0px 10px 0px;
}

.events_btn>i{
color: #ffffff; 
margin-right: 15px; 
font-size: 50px;
}

.events_btn:link>i {
    color: #f9c70f;
}

.events_btn:visited>i {
  color: #ffffff;
  text-decoration: none;
}

.events_btn:hover>i {
 color: #f9c70f;
}

.events_btn:active>i {
  color: #f9c70f;
}

.events_btn:link>span {
    color: #f9c70f;
}

.events_btn:visited>span {
  color: #ffffff;
  text-decoration: none;
}

.events_btn:hover>span {
 color: #f9c70f ;
}

.events_btn:active>span {
  color: #f9c70f;
}

<ul class="img-list">
  <li><img style="width: 100%; height: 100%;" src="http://www.sflsupport.org/wp-content/uploads/2016/06/Programs-11.jpg" />                              
    <div class="text-content">
      <div>
       <h5 style="color: white; font-size: 38px; font-family: Montserrat; font-weight: 600; line-height: 42px; letter-spacing: 2px;">WEBINAR<br/>ARCHIVE</h5>
       <hr style="border-top: 2px solid #ffffff; width: auto; margin: 10px 30px;"/>Throughout the years SFL has ammased the library of recorded webinars from some of the leading libertarian voices about numerous topics in philosophy, politics, and economics. How can the government fix the higher education bubble? What is Ayn Rand's theory of natural rights? Tune in to our videos for answers to these questions and many more.
      <br>
      <a class="btn" style="color: white; text-align: center; margin-top: 10px; padding-top: 5px; padding-bottom: 5px; padding-left: 30px; padding-right: 30px; text-decoration: none; font-size: 24px; font-weight: 600; border: 3px solid white; letter-spacing: 2px;" href="http://www.google.com/" target="_blank">READ MORE</a>
      </div>
    </div>
  </li>
</ul>

Answer 1

display:table;从中移除.text-content.还添加bottom:0;它.