Add Intro and skills styles into styles.css

[alf-007]

.intro {
  display: flex;
  justify-content: start;
}

.intro__icon-wrapper {
  margin-right: 30px;
  width: 30px;
  display: flex;
  justify-content: center;
}

.intro__icon {
  height: 1.1428rem;
  vertical-align: text-bottom;
}

.intro__icon path {
  fill: var(--text-decoration-color);
}

.intro_text {
  color: var(--secondary-text-color);
  text-align: justify;
}

.skills__header {
  color: var(--secondary-text-color);
  text-align: center;
  margin-bottom: 15px;
}

.skills__text {
  color: var(--secondary-text-color);
  text-align: justify;
}