/* montserrat-700 - latin */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 700;
  src: local('Montserrat Bold'), local('Montserrat-Bold'),
    url('../fonts/montserrat-v14-latin-700.woff2') format('woff2'),
    /* Chrome 26+, Opera 23+, Firefox 39+ */
    url('../fonts/montserrat-v14-latin-700.woff') format('woff');
  /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
}

/* roboto-300 - latin */
@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 300;
  src: local('Roboto Light'), local('Roboto-Light'),
    url('../fonts/roboto-v20-latin-300.woff2') format('woff2'),
    /* Chrome 26+, Opera 23+, Firefox 39+ */
    url('../fonts/roboto-v20-latin-300.woff') format('woff');
  /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
}

:root {
  --main-font: 'Montserrat', sans-serif;
  --second-font: 'Roboto', sans-serif;
  --light-font-color: #fff;
  --dark-font-color: #666666;
  --dark-heading-color: #333333;
  --btn-color: #ff4e50;
}

* {
  margin: 0;
  padding: 0;
}

*,
*::before,
*::after {
  box-sizing: inherit;
}

html {
  box-sizing: border-box;
}

ul,
ol {
  list-style: none;
}

a {
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

.container {
  width: 290px;
  margin: 0 auto;
}

/* HEADER SECTION */

.header {
  padding-top: 20px;
  position: absolute;
  width: 100%;
  z-index: 1;
}

.header__nav {
  display: flex;
  justify-content: center;
}

.header__nav_buttons {
  min-width: 152px;
  display: flex;
  justify-content: space-between;
}

.header__nav_log_in {
  border: none;
  transition: transform 200ms linear;
}

.header__nav_sign_up {
  width: 90px;
  height: 36px;
  border-radius: 18px;
  border: 2px solid #fff;
  transition: all 0.2s linear;
}

.btn {
  font-family: var(--main-font);
  font-weight: 700;
  font-size: 14px;
  color: #fff;
  background-color: transparent;
  cursor: pointer;
}

.btn::first-letter {
  text-transform: uppercase;
}

.header__nav_log_in:hover,
.header__nav_log_in:focus {
  color: var(--btn-color);
  text-shadow: 1px 1px 2px var(--dark-heading-color);
  transform: scale(1.1);
  outline: none;

}

.header__nav_sign_up:hover,
.header__nav_sign_up:focus {
 background-color: transparent;
  color: var(--light-font-color);
  text-shadow: 1px 1px 2px var(--dark-heading-color);
  border-color: var(--btn-color);
  box-shadow: 1px 1px 5px var(--dark-heading-color);
  transform: scale(1.05);
  outline: none;
}

/* ABOUT SECTION */

.about {
  position: relative;
  color: var(--light-font-color);
  background-color: #1a1915;
  background-image: url("../img/background_main/mobile_bgr.png");
  background-repeat: no-repeat;
  background-size: cover;
  height: 100vh;
  min-width: 100%;
  text-align: center;
  padding-top: 164px;
  /* padding-bottom: 140px; */
}

.main_page_heading {
  font-family: var(--main-font);
  font-weight: 700;
  font-size: 20px;
  line-height: 24px;
  margin: 0;
  padding: 0;
  margin-bottom: 36px;
  text-transform: uppercase;
}

.about__heading {
  font-family: var(--main-font);
  font-weight: 700;
  margin-bottom: 20px;
  font-size: 29px;
  line-height: 36px;
  text-transform: uppercase;
}

.about__heading_description {
  font-family: var(--second-font);
  font-weight: 300;
  font-size: 18px;
  line-height: 22px;
  margin-bottom: 18px;
  padding: 0 30px;
}

.about__heading_description::first-letter {
  text-transform: uppercase;
}

.about__heading_link {
  font-family: var(--main-font);
  font-weight: 700;
  font-size: 14px;
  line-height: 17px;
  display: block;
  background-color: var(--btn-color);
  color: var(--light-font-color);
  height: 40px;
  width: 290px;
  margin: 0 auto;
  border-radius: 20px;
  text-align: center;
  padding-top: 12px;
  cursor: pointer;
  transition: all 0.2s linear;
}

.about__heading_link:hover,
.about__heading_link:focus {
  background-color: transparent;
  color: #fff;
  text-shadow: 1px 1px 5px var(--dark-heading-color);
  border-color: var(--dark-heading-color);
  box-shadow: 1px 1px 5px var(--dark-heading-color);
  transform: scale(1.05);
  outline: none;
}

.about__heading_link::first-letter {
  text-transform: uppercase;
}

/* PARTNERS SECTION */

.partners {
  padding: 60px 0;
}

.partners__heading {
  font-family: var(--main-font);
  font-weight: 700;
  font-size: 22px;
  line-height: 26px;
  color: var(--dark-heading-color);
  text-align: center;
  margin-bottom: 20px;
}

.partners__list {
  display: flex;
  flex-wrap: wrap;
  text-align: center;
  margin: 0 auto;
  margin-bottom: 30px;
}

.partners__list_item {
  width: 250px;
}

.partners__list_item_box {
  width: 120px;
  height: 120px;
  margin: 0 auto;
  margin-bottom: 14px;
}

.partners__list_item_box_img {
  border-radius: 50%;
}

.partners__list_item_box {
  position: relative;
}

.partners__list_item_box::before {
  content: "";
  position: absolute;
  background-repeat: no-repeat;
  background-position: center;
  width: 38px;
  height: 38px;
  border: 4px solid var(--light-font-color);
  border-radius: 50%;
  bottom: 0;
  right: 0;
}

.tv_icon::before {
  background-image: url("../img/partners/icons/tv_icon.png");
  background-color: var(--btn-color);
}

.bulb_icon::before {
  background-image: url("../img/partners/icons/bulb_icon.png");
  background-color: #ffa507;
}

.coffe_icon::before {
  background-image: url("../img/partners/icons/cofe_cup_icon.png");
  background-color: #1cd7ad;
}

.telegram_icon::before {
  background-image: url("../img/partners/icons/telegram_icon.png");
  background-color: #4e73db;
}

.partners__list_item_name {
  font-family: var(--main-font);
  font-weight: 700;
  font-size: 14px;
  line-height: 17px;
  color: var(--dark-heading-color);
  margin-bottom: 20px;
  text-transform: capitalize
}

.partners__list_item_name_about {
  font-family: var(--second-font);
  font-weight: 300;
  font-size: 14px;
  line-height: 17px;
  color: var(--dark-font-color);
}

.partners__link {
  font-family: var(--main-font);
  font-weight: 700;
  font-size: 14px;
  line-height: 17px;
  display: block;
  background-color: transparent;
  color: var(--btn-color);
  border: 2px solid var(--btn-color);
  border-radius: 20px;
  height: 40px;
  width: 290px;
  cursor: pointer;
  margin: 0 auto;
  text-align: center;
  padding-top: 10px;
  transition: all 0.2s linear;
}

.partners__link::first-letter {
  text-transform: uppercase;
}

.partners__link:hover,
.partners__link:focus {
  background-color: var(--btn-color);
  color: #fff;
  text-shadow: 1px 1px 5px var(--dark-heading-color);
  border-color: var(--btn-color);
  box-shadow: 1px 1px 5px var(--dark-heading-color);
  transform: scale(1.05), ;
  outline: none;
}

/* --- MEDIA --- */

@media (max-width: 767px) {

  .header .visually-hidden {
    position: absolute !important;
    clip: rect(1px 1px 1px 1px);
    /* IE6, IE7 */
    clip: rect(1px, 1px, 1px, 1px);
    padding: 0 !important;
    border: 0 !important;
    height: 1px !important;
    width: 1px !important;
    overflow: hidden;
  }

  .about {
    background-image: url("../img/background_main/mobile_bgr.png");
  }

.partners__list_item:not(:last-child) {
  margin-bottom: 30px;
}

}

/* ----- 768px TABLET  ----- */

@media (min-width: 768px) {
  .container {
    width: 748px;
  }

 /* HEADER */

  .header {
    padding-top: 30px;
}

  .header__nav {
    width: 100%;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
  }

  .header__nav_logo {
    font-family: var(--main-font);
    font-weight: 700;
    font-size: 20px;
    line-height: 24px;
    text-transform: uppercase;
    color: var(--light-font-color);
  }

/* ABOUT */

  .about {
    padding-top: 222px;
    background-image: url("../img/background_main/teblet_bgr.png");
  }

  .about__heading {
    font-size: 52px;
    line-height: 62px;
    width: 75%;
    margin: 0 auto;
    margin-bottom: 40px;
  }

  .about__heading_description {
    font-size: 24px;
    line-height: 29px;
    margin-bottom: 37px;
  }

  .about__heading_link {
    width: 225px;
  }

  .about .visually-hidden {
    position: absolute !important;
    clip: rect(1px 1px 1px 1px);
    /* IE6, IE7 */
    clip: rect(1px, 1px, 1px, 1px);
    padding: 0 !important;
    border: 0 !important;
    height: 1px !important;
    width: 1px !important;
    overflow: hidden;
  }
}
  /* PARTNERS */

  .partners {
    padding-top: 75px;
  }

  .partners__heading {
    margin-bottom: 35px;
  }

  .partners__list {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    width: 75%;
  }

  .partners__list_item:not(:nth-last-child(-n+2)) {
    margin-bottom: 30px;
  }

  .partners__link {
  width: 192px;
}

/* ----- 1440px DESKTOP  ----- */

@media (min-width: 1200px) {

.container {
    width: 942px;
  }

/* HEADER */

 .header {
    padding-top: 38px;
}

.header__nav {
    padding: 0;
  }

/* ABOUT */
  .about {
    padding-top: 222px;
    background-image: url("../img/background_main/desktop_bgr.png");
  }

  .about__heading {
    width: 55%;
    margin-bottom: 20px;
  }

  /* PARTNERS */

  .partners {
    padding: 73px 0;
  }

.partners__list {
    width: 100%;
    display: flex;
    justify-content: space-between;
  }

.partners__list_item {
  width: 23%;
  margin-bottom: 30px;
}

  }