.a {
  text-align: right;
}
.a2, .aa2 {text-align: center;}


.aa    { float: right;  margin-left: 10px; margin-right: 10px; }
.aa1 { float: left;  margin-left: 10px; margin-right: 10px; }
.a2 { display: inline; margin-left: 10px; margin-right: 10px; }
.aa2 {   margin-left: 10px; margin-right: 10px; }



.welcome {


  justify-content: space-between;
  text-align: center;

}