index.scss

.student-form {
  margin-top: -27px;
  padding: 0 35px;

  .input-with-country-codes {
    margin-bottom: 15px;
  }
}

.student-form__code {
  margin: 0 0 15px;
  
  &.input-wrapper {
    width: 100%;
  }
}

.student-form__item {
  display: flex;
  align-items: center;
  margin-bottom: 15px;
}

.student-form__label {
  width: 44px;
  font-size: 15px;
  color: 333;
}

.student-form__input {
  flex: 1;
  height: 46px;
  padding: 0 15px;
  border: 1px solid #ccc;
  border-radius: 3px;
  box-sizing: border-box;
  font-size: 15px;
  color: #999;
}

.student-form__footer {
  position: relative;
  margin-top: 35px;
}

.student-form__tip {
  position: absolute;
  top: -25px;
  margin: 0;
  padding-left: 60px;
  font-size: 12px;
  color: #FF1717;
  line-height: 1;
}

.student-form__submit {
  width: 100%;
  height: 44px;
  padding: 0;
  border-style: none;
  border-radius: 3px;
  font-size: 18px;
  color: #fff;
  background-color: #0099FF;

  &:disabled {
    background-color: #ccc;
  }
}

.student-select {
  position: relative;
  flex: 1;
  height: 46px;

  input {
    width: 100%;
    height: 100%;
    padding: 0 15px;
    border: 1px solid #ccc;
    border-radius: 3px;
    box-sizing: border-box;
    font-size: 15px;
    color: #999;

    &.active {
      border-radius: 3px 3px 0 0;
    }
  }
}

.student-select__list {
  position: absolute;
  top: 45px;
  width: 100%;
  border: 1px solid #ccc;
  border-radius: 0 0 3px 3px;
  box-sizing: border-box;
  background-color: #fff;
  z-index: 99;
}

.student-select__option {
  padding-left: 15px;
  font-size: 14px;
  color: #999;
  line-height: 32px;

  &:hover {
    color: #0099FF;
  }
}