This defines the default size of an element before the remaining space is distributed.
<div class="container"> <div class="basis1"> ... </div> <div class="basis2"> ... </div> <div class="basis3"> ... </div> </div>
<div class="container"> <div class="basis1"> ... </div> <div class="basis1"> ... </div> <div class="basis1"> ... </div> <div class="basis1"> ... </div> <div class="basis1"> ... </div> </div>
<div class="container center-center"> <div class="basis1"> ... </div> <div class="basis1"> ... </div> <div class="basis1"> ... </div> <div class="basis1"> ... </div> <div class="basis1"> ... </div> </div>
<div class="container"> <div class="flex basis1"> ... </div> <div class="flex basis1"> ... </div> <div class="flex basis1"> ... </div> <div class="flex basis1"> ... </div> <div class="flex basis1"> ... </div> </div>
<div class="container wrap"> <div class="flex basis2"> ... </div> <div class="flex basis2"> ... </div> <div class="flex basis2"> ... </div> <div class="flex basis2"> ... </div> <div class="flex basis2"> ... </div> </div>
<div class="container wrap"> <div class="flex basis3"> ... </div> <div class="flex basis3"> ... </div> <div class="flex basis3"> ... </div> <div class="flex basis3"> ... </div> <div class="flex basis3"> ... </div> </div>
<div class="container wrap"> <div class="flex basis4"> ... </div> <div class="flex basis4"> ... </div> <div class="flex basis4"> ... </div> <div class="flex basis4"> ... </div> <div class="flex basis4"> ... </div> </div>
<div class="container wrap"> <div class="flex basis5"> ... </div> <div class="flex basis5"> ... </div> <div class="flex basis5"> ... </div> <div class="flex basis5"> ... </div> <div class="flex basis5"> ... </div> </div>
<div class="container wrap"> <div class="flex basis6"> ... </div> <div class="flex basis6"> ... </div> <div class="flex basis6"> ... </div> <div class="flex basis6"> ... </div> <div class="flex basis6"> ... </div> </div>
<div class="container wrap"> <div class="flex basis7"> ... </div> <div class="flex basis7"> ... </div> <div class="flex basis7"> ... </div> <div class="flex basis7"> ... </div> <div class="flex basis7"> ... </div> </div>
<div class="container wrap"> <div class="flex basis8"> ... </div> <div class="flex basis8"> ... </div> <div class="flex basis8"> ... </div> <div class="flex basis8"> ... </div> <div class="flex basis8"> ... </div> </div>
<div class="container wrap"> <div class="flex basis9"> ... </div> <div class="flex basis9"> ... </div> <div class="flex basis9"> ... </div> <div class="flex basis9"> ... </div> <div class="flex basis9"> ... </div> </div>
<div class="container wrap"> <div class="flex basis10"> ... </div> <div class="flex basis10"> ... </div> <div class="flex basis10"> ... </div> <div class="flex basis10"> ... </div> <div class="flex basis10"> ... </div> </div>
<div class="container center-center"> <div class="basis1"> ... </div> </div>
<div class="container center-center"> <div class="basis2"> ... </div> </div>
<div class="container center-center"> <div class="basis3"> ... </div> </div>
<div class="container center-center"> <div class="basis4"> ... </div> </div>
<div class="container center-center"> <div class="basis5"> ... </div> </div>
<div class="container center-center"> <div class="basis6"> ... </div> </div>
<div class="container center-center"> <div class="basis7"> ... </div> </div>
<div class="container center-center"> <div class="basis8"> ... </div> </div>
<div class="container center-center"> <div class="basis9"> ... </div> </div>
<div class="container center-center"> <div class="basis10"> ... </div> </div>
<div class="container center-center"> <div class="basis11"> ... </div> </div>
<div class="container center-center"> <div class="basis12"> ... </div> </div>