.login-box {
  background: url(../image/m-bg.png) no-repeat center top/100% 250px;
  min-height: calc(100vh - 90px);
  padding-top: 10%;
}
.l-form {
  margin: 0 auto;
  width: 800px;
  min-height: 320px;
  padding: 32px 0;
  background-color: #fff;
  box-shadow: 0 13px 22px rgba(0, 0, 0, 0.05);
}
.l-h5 {
  width: 550px;
  margin: 0 auto 24px;
}
.l-form-item {
  width: 550px;
  min-height: 55px;
  border-radius: 8px;
  padding: 0 32px;
  border: 1px solid #c4c4c4;
  margin: 0 auto 15px;
  transition: all 0.2s;
}
.l-form-item:focus-within {
  border-color: var(--primary);
}
.l-input {
  flex: 1;
  font-size: 16px;
  line-height: 2;
}
.l-input::placeholder {
  color: #b5b5b5;
}

.l-btn {
  margin: 40px auto;
  width: 550px;
  height: 50px;
  text-align: center;
  border-radius: 8px;
  letter-spacing: 2px;
}