.mt-10{margin-top:10px;}
.mt-20{margin-top:20px;}
.mt-30{margin-top:30px;}

.mb-10{margin-bottom:10px;}
.mb-20{margin-bottom:20px;}
.mb-30{margin-bottom:30px;}

.flex{display:flex;}
.flex-between{
  display:flex;
  justify-content:space-between;
  align-items:center;
}

.hidden{display:none;}
.w-100{width:100%;}
/* Alias explícito: el estilo gris ya es el default en global_header.css */
.header-gray {
  background: #d9dde4;
  border-bottom: 1px solid #d9dde4;
}