@font-face {
  font-family: 'Montserrat';
  src: url(../fonts/Montserrat-Bold.ttf);
  font-weight: bold;
}

@font-face {
  font-family: 'Montserrat';
  src: url(../fonts/Montserrat-Medium.ttf);
  font-weight: 500;
}

@font-face {
  font-family: 'Roboto';
  src: url(../fonts/Roboto-Thin.ttf);
  font-weight: 100;
}

body {
  margin: 0;
}

.container {
  margin: 0 20px;
  box-sizing: border-box;
  text-align: center;
}

a {
  text-decoration: none;
}

header {
 padding-bottom: 140px;
  background: url(../img/promo.png) no-repeat center;
  background-size: cover;
  background-color: black;
  position: relative;

}

nav {
  padding: 20px 0 0;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 120px;
}

.logo {
  font-family: 'Montserrat';
  font-weight: 500;
  color: #ffffff;
  font-size: 19px;
  letter-spacing: 1.2px;
}

nav .logo {
  display: none;
}

.overlay .logo {
  display: inline-block;
  margin-bottom: 26px;
}

.btn {
  background-color: transparent;
  padding: 7px 16px;
  border: 2px solid #fff;
  border-radius: 50px;
  cursor: pointer;
  font-family: 'Montserrat';
  font-weight: 500;
  color: #ffffff;
  font-size: 14px;
}

.btn-transparent {
  background: transparent;
  border-color: transparent;
}

.btn-transparent:hover, 
.btn-transparent:focus{
border-color: white;
}

.btn-big {
  padding: 9px 20px;
  width: 100%;
}

.btn-filled {
  background: #ff4e50;
  border-color: #ff4e50;
}

.btn-accent {
  color: #ff4e50;
  border-color: #ff4e50;
}

.btn-accent:hover {
  color: #ffffff;
  background-color: #ff4e50;
}

.overlay {
  text-align: center;
  padding: 0 20px;
  box-sizing: border-box;
}

.overlay h1 {
  text-transform: uppercase;
  font-size: 29px;
  font-family: 'Montserrat';
  color: #ffffff;
  margin: 0 0 12px;
  letter-spacing: -0.1px;
  white-space: pre-line;
}

.promo-sub-text {
  color: #ffffffbe;
  font-size: 18px;
  font-family: 'Roboto';
  font-weight: 100;
  margin: 0 0 14px;
  letter-spacing: 0.6px;
}

/* MAIN  */
main {
  padding: 62px 0;
}

.main-sub-text {
  text-align: center;
  font-family: 'Montserrat';
  font-weight: 600;
  font-size: 21px;
  color: #333333;
  margin: 0 0 18px;
}

.block-partners {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  justify-content: space-around;
  align-items: center;
  margin-bottom: 34px;
}

.partner {
  text-align: center;
  width: 220px;
  box-sizing: border-box;
  padding-bottom: 24px;
}

.partner:nth-last-of-type(1) {
  padding-bottom: 0;
}
.partner .photo {
  display: inline-block;
  position: relative;
}

.photo {
  margin: 0 0 12px;
}

.photo img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  position: relative;
  display: block;
}

.with-tag:after {
  position: absolute;
  content: "";
  display: block;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  right: -4px;
  bottom: -4px;
  background: no-repeat center;
  border: 4px solid #ffffff;
}

.tag-tv:after {
  background-color: #ff4e50;
  background-image: url(../img/icon-tv.png);
}

.tag-coffee::after {
  background-color: #1cd7ad;
  background-image: url(../img/icon-coffee.png);
}

.tag-flask::after {
  background-color: #ffa507;
  background-image: url(../img/icon-flask.png);
}

.tag-aircraft::after {
  background-color: #4e73db;
  background-image: url(../img/icon-aircraft.png);
}

.partner-name {
  font-family: 'Montserrat';
  font-weight: 600;
  font-size: 14px;
  letter-spacing: -0.4px;
  margin: 0 0 16px;
}

.partner-description {
  font-family: 'Roboto';
  font-weight: 100;
  font-size: 14px;
  color: #8f8f8f;
  margin: 0;
}

@media (max-width:767px){
  .partner:nth-of-type(1) { order: 1; }
  .partner:nth-of-type(2) { order: 3; }
  .partner:nth-of-type(3) { order: 2; }
  .partner:nth-of-type(4) { order: 4; }
}

@media (min-width: 768px) {
  header {
   padding: 0 48px 234px;
  }

  nav {
    justify-content: space-between;
    margin-bottom: 140px;
    padding: 40px 0 0;
  }

  nav .logo {
    display: initial;
  }

  .overlay .logo {
    display: none;
  }

  .overlay h1 {
    font-size: 50px;
    font-weight: 600;
    margin: 0 0 26px;
  }

  .promo-sub-text {
    font-size: 24px;
    margin: 0 0 32px;
  }

  main {
    padding: 70px 0;
  }

  .main-sub-text {
    margin: 0 0 35px;
  }

  .block-partners {
    flex-direction: row;
    align-items: flex-start;
    margin-bottom: 52px;
  }

  .partner {
    width: 50%;
    padding-bottom: 54px;
  }

  .partner:nth-last-of-type(-n+2){
    padding-bottom: 0;
  }
 
  .container {
    width: 492px;
    margin: 0 auto;
  }

  .btn-big {
    width: auto;
  }

  .btn-accent{
    padding: 9px 28px;
  }
}

@media (min-width: 940px) {
  .container {
    width: 940px;
  }
  
  header{
    padding-bottom: 234px;
  }

  nav {
    width: 100%;
    max-width: 940px;
    box-sizing: border-box;
    margin: 0 auto 140px;
  }

  .block-partners{
    margin-bottom: 34px;
  }

  .partner {
    width: 23%;
    padding: 0;
  }

  .btn-accent {
    padding: 9px 28px;
  } 
}