* {
    box-sizing: content-box; width: 100%;
}

.container {
    position: relative;
    overflow: hidden;
    // width: 4000vw;
    // height: 2000vw;

   .content {
       position: left top;
       width: 100vw;
       height: inherit;
       max-width: 4000vw;
       display: -webkit-box;
       display: -ms-flexbox;
       display: flex;
       flex-direction: row;
       align-items: center;    
   
    
      .only {
          flex: 0 0 50vw;
          border: #ccc solid 1px;

          img {
              width: 100vw;
              height: auto;
              max-width: 100vw;
          }
      }
  }  
}