배경'만' 투명도 조절

HTML

 

<div class="rgba">
    <p>기아 타이거즈가 웬일로 잘한다 했더니 오늘 뚜드려 맞았구나...8ㅅ8.... </p>
  </div>

 

CSS

 

.rgba {
  width: 100%;
  max-width: 480px;
  margin: 1rem auto;
  text-align: center;
  padding: .6rem;
  background-color: transparent;
  background-color: rgba(200,200,200,0.2);
  filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99dddddd,endColorstr=#99dddddd);        
  -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99dddddd,endColorstr=#99dddddd)";
}