directly on the code
display:flex;
flex:1;
align-items: center;
justify-content: center;
overflow:hidden;
word-wrap:break-word;
word-break:break-all;
border-right:1px solid #323232;
font-size:12px;
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body>
<div class="box">
<div class="itemOne">
<div class="itemOne1">
动态内容XXXXX居中 50%动态内容XXXXX居中
50%动态内容XXXXX居中50%0%动态内容XXXXX居中50% 0%动态内容XXXXX居中50%
0%动态内容XXXXX居中50%
0%动态内容XXXXX居中50%0%动态内容XXXXX居中50%0%动态内容XXXXX居中50%
</div>
</div>
<div class="itemTwo">
<div class="itemTwo1">头部33333333333333333333333333333</div>
<div class="itemTwo3"></div>
<div class="itemTwo1">底部</div>
</div>
</div>
<script></script>
</body>
</html>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
.box {
width: 100%;
height: 400px;
background-color: plum;
display: flex;
}
.itemOne {
width: 75%;
height: 100%;
background-color: red;
display: flex;
justify-content: center;
}
.itemOne1 {
width: 100%;
height: 100%;
background-color: rgb(192, 236, 255);
margin-left: 33%;
flex: 1;
overflow: hidden;
word-wrap: break-word;
word-break: break-all;
border-right: 1px solid #323232;
font-size: 12px;
display: flex;
align-items: center;
justify-content: center;
}
.itemTwo {
width: 25%;
height: 100%;
background-color: green;
display: flex;
flex-direction: column;
align-content: space-between;
margin-left: 10px;
}
.itemTwo1 {
width: 50%;
height: 33%;
background-color: yellow;
flex: 1;
overflow: hidden;
word-wrap: break-word;
word-break: break-all;
border-right: 1px solid #323232;
font-size: 12px;
display: flex;
align-items: center;
justify-content: center;
}
.itemTwo3 {
width: 50%;
height: 33%;
}
</style>