responsive design - Div re-order with CSS -

does know of examples or tutorials on how achieve below:

on desktop layout be:

on mobile layout change to:

as can see, want box 2 , box 3 re-order , swap positions on mobile

does have tips or advice?

depending on browsers need support use flex-box. using media query screen size set order of second , third boxes switch below screen width.

i've done pen short example. i'd recommend css tricks complete guide flexbox talks how use flex far better can.

edit:

the basic principle set parent element (e.g., container) display: flex ; generates flexbox , allows set different parameters children.

using following html:

<div class="container">   <div class="box first">     box 1   </div>   <div class="box second">     box 2   </div>   <div class="box third">     box 3   </div> </div> 

if set display:flex on .container, can set whether content should display in row or column, should wrap down line, have space between or around elements, etc. i've set main rule wrapping row using flex-flow (which shorthand 2 other flex properties, including flex-direction need later), space between elements.

.container{   display:flex;   flex-flow: row wrap;   justify-content:space-between; } 

i use media query when browser narrower specified width, flex-direction gets changed row column

@media screen , (max-width:600px){   .container {     flex-direction:column   }  } 

then, in same media query, need tell elements want re-order order should in:

@media screen , (max-width:600px){   .container {     flex-direction:column   }   .second{     order: 3;   }   .third{     order: 2   } } 

sometimes i've noticed order needs defined elements, might need set first block , keep order: 1 . pen linked above, doesn't seem case here, keep eye out in other projects.