html,
body {
  margin: 0;
  padding: 0;
}

body {
    width: 100%;
    height: 100%;
    margin: 0px;
    padding: 0px;
    display: flex;
    justify-content: center;
    align-items: center;


    overflow: hidden;


}

#v{

 font-size:24px;
 position: absolute;
 top:0%;
 left:1%;
 padding:0px;
 width:50%;
 height:100%;
 background:red;
 overflow: hidden;
}