html {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  --header-heigth: 40px;
  --footer-heigth: 60px;
}

.header {
  height: var(--header-heigth);
}

.main {
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
    justify-content: center;
    align-items: center;
  }

.nav {
  padding: 10px 0;
  background-color: black;
  text-align: center;
}

.link {
  padding: 0 20px;
  color: white;
  text-decoration: none;
}

.main__image {
  background-image: url("../images/under_construction.gif");
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
  height: 150px;
  width: 150px; 
}

/* Карточки задач */
.infocard {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 5px 6px rgba(0,0,0,0.1);
    padding: 10px;
}

.infocard__text {
    display: block;
    width: 95%;
    border: 3px solid #4a90e2;
    border-radius: 4px;
    margin: 5px auto;
  }

/* Кнопки */
.infocard__button {
    background: #4a90e2;
    color: #fff;
    border: none;
    padding: 0.6rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
    margin: 5px auto;
    display: block;
  }

.infocard__button:hover {
    background: #357ab8;
}

/* Футер */
.footer {
    /* height: var(--footer-heigth); */
    text-align: center;
    padding: 1rem;
    background: #eee;
    color: #555;
    margin-top: 2rem;
}

/* Адаптивність */
@media (max-width: 600px) {
    nav {
        flex-direction: column;
    }
    nav a {
        text-align: center;
        padding: 1rem;
    }
}