center
<-- add a align-content class to body tag-->
+ <body class="display align-content">
<div class="v-d-flex v-conter-center" >
<div></div>
<div></div>
<div></div>
</div>
align-content-center version
start
<-- add a align-content class to body tag-->
+ <body class="display align-content">
<div class="v-d-flex v-content-start" >
<div></div>
<div></div>
<div></div>
</div>
align-content-start version
end
<-- add a align-content class to body tag-->
+ <body class="display align-content">
<div class="v-d-flex v-content-end" >
<div></div>
<div></div>
<div></div>
</div>
align-content-end version