@import url("https://fonts.googleapis.com/css?family=Roboto:400,700&display=swap&subset=latin-ext");

* {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Roboto", sans-serif;
  margin: auto;
  font-size: 18px;
}
.container {
  max-width: 1640px;
  margin: auto;
}
.logo img {
  transition: all 0.5s ease-in-out;
}
.logo img:hover {
  transform: scale(1.1);
}
.hero img {
  -webkit-animation: fadein 4s; /* Safari, Chrome and Opera > 12.1 */
  -moz-animation: fadein 4s; /* Firefox < 16 */
  -ms-animation: fadein 4s; /* Internet Explorer */
  -o-animation: fadein 4s; /* Opera < 12.1 */
  animation: fadein 4s;
}

@keyframes fadein {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Firefox < 16 */
@-moz-keyframes fadein {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Safari, Chrome and Opera > 12.1 */
@-webkit-keyframes fadein {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Internet Explorer */
@-ms-keyframes fadein {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
.hero {
  background: transparent url("img/background.jpg") 0% 0% no-repeat padding-box;
  border-top: 1px solid #707070;
  border-bottom: 1px solid #707070;
  min-height: 720px;
  background-size: cover;
  background-position: center;
  position: relative;
}
.mask {
  position: absolute;
  top: 0;
  height: 100%;
  width: 100%;
  background: rgba(0, 0, 0, 0.6);
}
.flex-img {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
}
.flex-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
header {
  padding: 45px 0;
}
nav ul {
  display: flex;
}
a {
  text-decoration: none;
  color: #000;
}
a:hover {
  opacity: 0.8;
}
nav li:first-child {
  margin-right: 70px;
}
ul {
  list-style-type: none;
}
h1 {
  font-size: 2em;
  padding: 40px 0;
}
h2 {
  font-size: 2em;
  padding: 0 0 20px 0;
}
.offer-description {
  width: 50%;
}
.after-offer-item {
  padding: 20px 0 60px;
  width: 50%;
  font-weight: 700;
}
.offer-main {
  margin-top: 40px;
  background-color: #f5f5f5;
}
.offer-box {
  padding: 40px 0;
  display: flex;
  flex-wrap: wrap;
  border-bottom: 4px solid #000;
}
.offer-item {
  flex: 20%;
  padding-right: 25px;
  transition: all 0.3s ease-in-out;
}
.offer-item li:nth-of-type(1) {
  padding: 20px 0 10px;
}
.offer-item li {
  padding: 10px 0;
  font-weight: 700;
}
.offer-item:hover {
  transform: scale(1.03);
  cursor: default;
}
footer {
  background-color: #1a1a1a;
  padding: 70px 0;
  color: #fff;
  line-height: 1.5;
}
.nav-footer {
  display: flex;
  flex: 3;
}
.footer-flex-box {
  align-items: normal;
  display: flex;
}
.logo-footer {
  flex: 1;
}
footer a {
  color: #fff;
}
.nav-footer-item {
  flex: 1;
}
footer #kontakt {
  color: lightgray;
  padding: 10px 0 40px 0;
}
.footer-nav-des {
  padding-top: 80px;
}
/* .nav-footer-item:nth-of-type(1) {
  margin-right: 120px;
} */
@media (max-width: 1700px) {
  body {
    font-size: 15px;
  }
  .container {
    width: 90%;
  }
  .hero {
    height: 80vh;
    min-height: 400px;
  }
  .hero img {
    width: 50%;
  }
  .offer-item {
    padding-right: 20px;
  }
  .footer-nav-des {
    padding-top: 75px;
  }
  .offer-description,
  .after-offer-item {
    width: 60%;
  }
}
@media (max-width: 1270px) {
  .footer-flex-box {
    display: block;
  }
}
@media (max-width: 1024px) {
  .offer-item {
    flex: 35%;
  }
  .nav-footer {
    display: block;
  }
  .footer-nav-des {
    padding-top: 25px;
  }
  .offer-description,
  .after-offer-item {
    width: 100%;
  }
}
@media (max-width: 768px) {
  body {
    font-size: 15px;
  }
  header {
    padding: 25px 0;
  }
  .hero {
    height: 50vh;
    min-height: 200px;
  }
  nav li:first-child {
    margin-right: 30px;
  }
  .logo img {
    width: 100%;
  }
}
@media (max-width: 767px) {
  .offer-box {
    display: block;
  }
  .offer-item {
    margin-bottom: 50px;
  }
  .nav-footer-item:nth-of-type(1) {
    margin-right: 50px;
  }
}
@media (max-width: 600px) {
  .footer-flex-box {
    display: block;
  }
  footer {
    padding: 35px 0;
  }
  h1 {
    padding: 30px 0;
  }
  .offer-item {
    padding-right: 0;
  }
  .logo img {
    width: 70%;
  }
}