how do element side by side html css code example

Example: div side by side

.float-container {
    border: 3px solid #fff;
    padding: 20px;
}

.float-child {
    width: 50%;
    float: left;
    padding: 20px;
    border: 2px solid red;
}


  

    
Float Column 1
  
  
  

    
Float Column 2