.layout {display:flex;flex-direction:column;min-height:100vh;}
.z-index-1 {position:relative; z-index:1;}
.d-flex > .tabs {flex-grow: 1; display:flex; flex-direction:column;}
.d-flex > .tab-pane.active {display:flex; flex-grow:1;}

.is-invalid~.invalid-feedback {display:block;}
.dropdown.d-block .btn {display:block; width:100%; text-align:left; padding-right:1.5rem;}
.dropdown.d-block .btn:after {position:absolute; top:50%; right:0.75rem; transform:translateY(-50%);}