.dh-back-top{position:fixed;right:22px;bottom:96px;z-index:60;width:52px;height:52px;border:1px solid rgba(255,255,255,.45);border-radius:50%;background:#0b4449;color:#fff;font-size:30px;line-height:1;box-shadow:0 10px 26px rgba(5,49,53,.25);opacity:0;pointer-events:none;transform:translateY(12px);transition:.2s}.dh-back-top.visible{opacity:1;pointer-events:auto;transform:none}@media(max-width:640px){.dh-back-top{right:18px;bottom:108px;width:48px;height:48px}}
.dh-invalid{border-color:#b4232f!important;box-shadow:0 0 0 3px rgba(180,35,47,.12)!important}