.form-register {
  max-width: 360px;
  padding: 15px;
  text-align: center;
}

.form-register .form-floating:focus-within {
  z-index: 2;
}

.form-register input[id="floatingInput"] {
  margin-bottom: -1px;
  border-bottom-right-radius: 0;
  border-bottom-left-radius: 0;
}

.form-register input[id="floatingEmail"] {
  margin-bottom: -1px;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  border-bottom-left-radius: 0;
}

.form-register input[id="floatingPassword1"] {
  margin-bottom: -1px;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  border-bottom-left-radius: 0;
}

.form-register input[id="floatingPassword2"] {
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}

.form-register div[id="passwordHelpBlock"] {
  margin-bottom: 6px;
  font-size: 6px;
}

.bd-placeholder-img {
  font-size: 1.125rem;
  text-anchor: middle;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
}

@media (min-width: 768px) {
  .bd-placeholder-img-lg {
    font-size: 3.5rem;
  }
}

.b-example-divider {
  width: 100%;
  height: 3rem;
  background-color: rgba(0, 0, 0, .1);
  border: solid rgba(0, 0, 0, .15);
  border-width: 1px 0;
  box-shadow: inset 0 .5em 1.5em rgba(0, 0, 0, .1), inset 0 .125em .5em rgba(0, 0, 0, .15);
}

.b-example-vr {
  flex-shrink: 0;
  width: 1.5rem;
  height: 100vh;
}

.bi {
  vertical-align: -.125em;
  fill: currentColor;
}

.nav-scroller {
  position: relative;
  z-index: 2;
  height: 2.75rem;
  overflow-y: hidden;
}

.nav-scroller .nav {
  display: flex;
  flex-wrap: nowrap;
  padding-bottom: 1rem;
  margin-top: -1px;
  overflow-x: auto;
  text-align: center;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
}

/* 添加用户名和邮箱验证状态的样式 */
.validation-message {
  font-size: 0.875em;
  margin-top: 0rem;
}

.valid {
  color: #28a745;
}

.invalid {
  color: #dc3545;
}