*{
  margin:  0;
  padding: 0;
}
body{
   background: url('./images/bg.jpg') no-repeat;
   background-size: 100% 100%;
   width: 100vw;
   height: 100vh;
   overflow: hidden;
   display: flex;
   align-items: center;
   justify-content: center;
}
.contentView{
   display: flex;
   width:80%;
   height:calc(100% - 160px);
   background:#fff;
   border-radius: 20px;
   box-shadow: 0 0 20px #ccc;
   box-sizing: border-box;
   padding:20px 0;
}
.leftView{
   width: 200px;
   position:relative;
   background-color: rgb(245,245,245);
}
.menuItem{
   width: 100%;
   height: 60px;
   display: flex;
   align-items: center;
   justify-content: center;
   box-sizing: border-box;
   border-bottom: 1px solid rgb(235,235,235);
   cursor: pointer;
   z-index: 2;
   position: relative;
}
.menuItem:hover{
  /* background-color: rgb(237,237,237); */
}

.redBView{
   position: absolute;
   left:0;
   top:0;
   width: 100%;
   height: 60px;
   box-sizing: border-box;
   background-color: #db0d0c;
   z-index: 1;
   transition: all 0.1s;
}
.rightView{
   flex:1;
   overflow: auto;
   padding: 10px 30px;
 
}
h3{
  margin-bottom: 8px;
  text-align: left;
}
p{
   margin-bottom: 8px;
   text-indent: 2rem;
   text-align: justify;
}